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{{redirect|Heavy metal}}
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{{Infobox Music genre
|name=[[Heavy metal music|Heavy metal]]
|bgcolor=#BB0022
|color=white
|stylistic_origins=[[Blues-rock]]<br/>[[Psychedelic rock]]<!-- Note: Do not add "hard rock" here. As described in article, "heavy metal" and "hard rock" were synonymous for a decade—one did not precede the other. -->
|cultural_origins=Late 1960s, England and United States <!-- Note: Do not replace "England" with "United Kingdom", as there were no heavy metal pioneers in Scotland/Wales/Northern Ireland -->
|instruments=[[Electric guitar]] - [[Bass guitar]] - [[Drum kit|Drum]]s - [[Singing|Vocals]] - [[Keyboard instrument|Keyboards]]
|popularity=Worldwide; peaking in the 1980s. Varied depending on subgenre
|derivatives=
|subgenrelist=Heavy metal subgenres
|subgenres=[[Avant-garde metal]] - [[Black metal]] - [[Death metal]] - [[Doom metal]] - [[Glam metal]] - [[Gothic metal]] - [[Groove metal]] - [[Power metal]] - [[Progressive metal]] - [[Speed metal]] - [[Stoner rock|Stoner metal]] - [[Symphonic metal]] - [[Thrash metal]] - [[Traditional heavy metal]] - [[Viking metal]]
|fusiongenres=[[Alternative metal]] - [[Christian metal]] - [[Crust punk]] - [[Drone metal]] - [[Folk metal]] - [[Funk rock#Funk metal|Funk metal]] - [[Grindcore]] - [[Grunge music|Grunge]] - [[Industrial metal]] - [[Metalcore]] - [[Neo-classical metal]] - [[Nu metal]] - [[Post-metal]] - [[Rap rock|Rap metal]] - [[Sludge metal]]
|regional_scenes=[[Australian heavy metal|Australia]] - [[Bay Area thrash metal|Bay Area]] - [[Brazilian thrash metal|Brazil]] − [[New Wave of British Heavy Metal|Britain]] − [[Teutonic thrash metal|Germany]] - [[Melodic death metal#Gothenburg sound|Gothenburg]] - [[New Wave of American Heavy Metal|United States]] - [[Heavy metal in Muslim majority countries|Muslim world]]
|other_topics=[[Heavy metal fashion|Fashion]] - [[List of heavy metal bands|Bands]] - [[Heavy metal umlaut|Umlaut]] - [[Blast beat]] - [[Heavy metal subgenres|Subgenres]]
}}
'''Heavy metal''' (often referred to simply as '''metal''') is a genre of [[rock music]]<ref>Du Noyer (2003), p. 96; Weinstein (2000), pp. 11–13</ref> that developed in the late 1960s and early 1970s, largely in England and the United States.<ref>Weinstein (2000), p. 14</ref> With roots in [[blues-rock]] and [[psychedelic rock]], the bands that created heavy metal developed a thick, massive sound, characterized by highly amplified [[Distortion (guitar)|distortion]], extended guitar solos, and emphatic beats. [[Allmusic]] states that "of all rock & roll's myriad forms, heavy metal is the most extreme in terms of volume, [[machismo]], and theatricality".<ref>{{cite web|title=Genre—Heavy Metal|author=|publisher=Allmusic|date=|url=http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:655|accessmonthday=March 17 | accessyear= 2007}}</ref>

Early heavy metal bands such as [[Led Zeppelin]], [[Black Sabbath]], and [[Deep Purple]] attracted large audiences, though they were often critically reviled, a status common throughout the history of the genre. In the mid-1970s, [[Judas Priest]] helped spur the genre's evolution by discarding much of its [[blues]] influence; [[Motörhead]] introduced a [[punk rock]] sensibility and an increasing emphasis on speed. Bands in the [[New Wave of British Heavy Metal]] such as [[Iron Maiden]] followed in a similar vein. Before the end of the decade, heavy metal had attracted a worldwide following of fans known as "[[metalhead]]s" or "[[headbanging|headbangers]]".

In the 1980s, [[glam metal]] became a major commercial force with groups like [[Mötley Crüe]]. [[Underground music|Underground scenes]] produced an array of more extreme, aggressive styles: [[thrash metal]] broke into the mainstream with bands such as [[Metallica]], while other styles like [[death metal]] and [[black metal]] remain [[subculture|subcultural]] phenomena. Since the mid-1990s, popular styles such as [[nu metal]], which often incorporates elements of [[funk]] and [[Hip hop music|hip hop]]; and [[metalcore]], which blends [[extreme metal]] with [[hardcore punk]], have further expanded the definition of the genre.
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== Characteristics ==
Heavy metal is traditionally characterized by loud distorted guitars, emphatic rhythms, dense bass-and-drum sound, and vigorous vocals. Metal subgenres variously emphasize, alter, or omit one or more of these attributes. ''[[The New York Times]]'' critic [[Jon Pareles]] writes, "In the taxonomy of popular music, heavy metal is a major subspecies of hard-rock—the breed with less syncopation, less blues, more showmanship and more brute force."<ref name="JP">Pareles, Jon. [http://query.nytimes.com/gst/fullpage.html?res=940DE2DB113DF933A25754C0A96E948260&sec=&spon=&pagewanted=all "Heavy Metal, Weighty Words"] ''The New York Times'', July 10, 1988. Retrieved on November 14, 2007.</ref> The typical band lineup includes a [[drummer]], a [[bass guitar|bassist]], a [[rhythm guitar]]ist, a [[lead guitar]]ist, and a singer, who may or may not be an instrumentalist. [[Keyboard instruments]] are often used to enhance the fullness of the sound.<ref name="W25">Weinstein (2000), p. 25</ref> The loud, distorted [[Hammond organ]] and occasionally the magnetic tape-based [[mellotron]] were popular with early metal bands; these instruments were displaced in the 1980s by [[electronic keyboard]] synthesizers. Today, keyboards are used in styles such as [[progressive metal]], [[power metal]], and [[symphonic metal]]. Some [[nu metal]] bands incorporate [[hip hop]] elements, which may include a [[Disc jockey|DJ]] [[scratching]] and creating various sound effects.

[[Image:Judas Priest Retribution 2005 Tour.jpg|thumb|[[Judas Priest]], performing in 2005]]
The [[electric guitar]] and the sonic power that it projects through amplification has historically been the key element in heavy metal.<ref name="W23">Weinstein (2000), p. 23</ref> Guitars are often played with [[distortion pedal]]s through heavily overdriven [[Valve amplifier|tube amplifiers]] to create a thick, powerful, "heavy" sound. In the early 1970s, some popular metal groups began [[multiple guitar players|cofeaturing two guitarists]]. Leading bands such as [[Judas Priest]] and [[Iron Maiden]] followed this pattern of having two or three guitarists share the roles of both lead and rhythm guitar. A central element of much heavy metal is the [[guitar solo]], a form of [[cadenza]]. As the genre developed, more intricate solos and [[riffs]] became an integral part of the style. Guitarists use [[sweep-picking]], [[tapping]], and other advanced techniques for rapid playing, and many styles of metal emphasize [[virtuoso|virtuosic]] displays.

The lead role of the guitar in heavy metal often collides with the traditional "frontman" or bandleader role of the vocalist, creating a musical tension as the two "contend for dominance" in a spirit of "affectionate rivalry".<ref name="W25"/> Heavy metal "demands the subordination of the voice" to the overall sound of the band. Reflecting metal's roots in the 1960s counterculture, an "explicit display of emotion" is required from the vocals as a sign of authenticity.<ref>Weinstein (2000), p. 26</ref> Critic [[Simon Frith]] claims that the metal singer's "tone of voice" is more important than the lyrics.<ref>Cited in Weinstein (2000), p. 26</ref> Metal vocals vary widely in style, from the multioctave, theatrical approach of Judas Priest's [[Rob Halford]] and Iron Maiden's [[Bruce Dickinson]], to the gruff style of [[Motörhead]]'s [[Lemmy]] and [[Metallica]]'s [[James Hetfield]], to the straight-out screaming and growling [[At the Gates]]' [[Tomas Lindberg]], to the phlegm-clogged, possessed style of black metal singers such as [[Mayhem (band)|Mayhem]]'s [[Dead (musician)|Dead]].

The prominent role of the bass is also key to the metal sound, and the interplay of bass and guitar is a central element.<ref name="uao">uao. [http://blogcritics.org/archives/2006/02/19/130239.php "Sunday Morning Playlist: Heavy Metal"]. ''Blogcritics Magazine'', February 19, 2006. Retrieved on November 16, 2007.</ref> The bass guitar provides the low-end sound crucial to making the music "heavy".<ref name="W24">Weinstein (2000), p. 24</ref> Metal basslines vary widely in complexity, from holding down a low [[pedal point]] as a foundation to doubling complex riffs and [[lick (music)|lick]]s along with the lead and/or rhythm guitars. Some bands feature the bass as a lead instrument,<ref name="uao"/> an approach popularized by Metallica's [[Cliff Burton]] in the early 1980s.<ref>[http://www.bassplayer.com/article/the-king-metal/Feb-05/164 "Cliff Burton's Legendary Career: The King of Metal Bass"] ''Bass Player'', February 2005. Retrieved on November 13, 2007.</ref> Metal bassists frequently use [[plectrum|picks]] instead of fingerstyle plucking, to get a stronger, clearer articulation. A few use [[shred guitar]]–style techniques such as tapping and sweep picking. In some styles, such as thrash and death metal, the bass may be distorted with a [[bass effects|bass overdrive]] pedal for a heavier, thicker sound. Nu metal as well as death metal bassists often use a five- or six-string bass (or a detuned instrument) with an [[extended-range bass|extended lower range]].

[[Image:Metallica live London crop.jpg|thumb|[[Metallica]], performing in 2003]]
The essence of metal drumming is creating a loud, constant beat for the band using the "trifecta of speed, power, and precision".<ref>Dawson, Michael. [http://www.moderndrummer.com/updatefull/200001503 "Chris Adler: More Than Meets The Eye"] ''Modern Drummer Online''. Retrieved on November 13, 2007.</ref> Metal drumming "requires an exceptional amount of endurance", and drummers have to develop "considerable speed, coordination, and dexterity...to play the intricate patterns" used in metal.<ref name="Berry">Berry and Gianni (2003), p. 85</ref> A characteristic metal drumming technique is the [[cymbal choke]], which consists of striking a cymbal and then immediately silencing it by grabbing it with the other hand (or, in some cases, the same striking hand), producing a burst of sound. The metal drum setup is generally much larger than those employed in other forms of rock music;<ref name="W24"/> in some cases, a "huge drum kit envelope[s] the whole of the backline" of the stage.<ref>Burgess, Mick. [http://www.metalexpressradio.com/menu.php?main=reviews&id=2230 "Dream Theater (Live)"] ''Metal Express Radio'', June 9, 2007. Retrieved on November 13, 2007.</ref> Aside from the standard toms, bass drum, snare, and hi-hat, ride, and crash cymbals used in many rock drumkits, there is often a double bass drum, additional toms, a number of additional cymbals (e.g., splash and extra crash cymbals), and other instruments such as a [[Cowbell (instrument)|cowbell]].

In live performance, [[loudness]]—an "onslaught of sound," in Deena Weinstein's description—is considered vital.<ref name="W23"/> In his book ''Metalheads'', Jeffrey Arnett refers to heavy metal concerts as "the sensory equivalent of war."<ref>Arnett (1996), p. 14</ref> Following the lead set by [[Jimi Hendrix]], [[Cream (band)|Cream]] and [[The Who]], early heavy metal acts such as [[Blue Cheer]] set new benchmarks for volume. As Blue Cheer's [[Dickie Peterson|Dick Peterson]] puts it, "All we knew was we wanted more power."<ref name = "vdqxbw">Walser (1993), p. 9</ref> Reviewing a Motörhead concert in 1977, Paul Sutcliffe noted how "excessive volume in particular figured into the band’s impact."<ref>Quoted in Waksman, Steve. [http://www.echo.ucla.edu/volume6-issue2/waksman/waksman3.html "Metal, Punk, and Motörhead: Generic Crossover in the Heart of the Punk Explosion".] ''Echo: A Music-Centered Journal'' 6.2 (Fall 2004). Retrieved on November 15, 2007</ref> Weinstein makes the case that in the same way that [[melody]] is the main element of [[Pop music|pop]] and rhythm is the main focus of [[house (music)|house]] music, powerful sound, timbre, and volume are the key elements of metal. She argues that the loudness is designed to "sweep the listener into the sound" and to provide a "shot of youthful vitality."<ref name="W23"/> Heavy metal's fixation on loudness was mocked in the [[rockumentary]] spoof ''[[This Is Spinal Tap]]'', in which a metal guitarist claims to have modified his amplifiers to "[[Up to eleven|go to eleven]]."

=== Musical language ===
==== Rhythm and tempo ====
The beat in metal songs is emphatic, with deliberate stresses. Weinstein observes that the wide array of sonic effects available to metal drummers enables the "rhythmic pattern to take on a complexity within its elemental drive and insistency."<ref name="W24"/> In many heavy metal songs, the main groove is characterized by short, two-note or three-note rhythmic figures—generally made up of [[eighth note|8th]] or [[sixteenth note|16th notes]]. These rhythmic figures are usually performed with a [[staccato]] attack created by using a [[palm muting|palm-muted]] technique on the rhythm guitar.<ref>"Master of Rhythm: The Importance of Tone and Right-hand Technique," ''Guitar Legends'', April 1997, p. 99</ref>
[[Image:Heavy rythmic pattern.jpg|500px|thumb| An example of a rhythmic pattern used in heavy metal.]]
Brief, abrupt, and detached rhythmic cells are joined into rhythmic phrases with a distinctive, often jerky texture. These phrases are used to create rhythmic accompaniment and melodic figures called [[riff]]s, which help to establish thematic [[Hook (music)|hooks]]. Heavy metal songs also use longer rhythmic figures such as [[whole note]]- or dotted quarter note-length chords in slow-tempo [[power ballad]]s. The tempos in early heavy metal music tended to be "slow, even ponderous."<ref name="W24"/> By the late 1970s, however, metal bands were employing a wide variety of tempos. In the 2000s, metal tempos range from slow ballad tempos (quarter note = 60 [[beats per minute]]) to extremely fast [[blast beat]] tempos (quarter note = 350 beats per minute).<ref name="Berry"/>

==== Harmony ====
One of the signatures of the genre is the guitar [[power chord]].<ref>Walser (1993), p. 2</ref> In technical terms, the power chord is relatively simple: it involves just one main [[interval (music)|interval]], generally the [[perfect fifth]], though an [[octave]] may be added as a doubling of the [[root]]. Although the perfect fifth interval is the most common basis for the power chord,<ref>See, e.g., [http://www.melbay.com/guitarglossary.asp Glossary of Guitar Terms.] Mel Bay Publications. Retrieved on November 15, 2007</ref> power chords are also based on different intervals such as the [[minor third]], [[major third]], [[perfect fourth]], [[diminished fifth]], or [[minor sixth]].<ref>"Shaping Up and Riffing Out: Using Major and Minor Power Chords to Add Colour to Your Parts," ''Guitar Legends'', April 1997, p. 97</ref> Since the power chord is based on a single interval, it enables guitarists to use a high level of distortion without unintended [[inharmonicity]] or [[intermodulation distortion]]. If a [[triad]]—a chord with a root, third, and fifth—is played on a heavily distorted guitar, intermodulation distortion may produce frequency components at the various sums and differences of the frequency components of the input signal which will be not be harmonically related to the input signal, leading to disarmonious sounds.<ref>[http://www.geofex.com/effxfaq/distn101.htm ''A Musical Distortion Primer'']: "REALLLY clipping the sine wave gives a sound that's a high gain, hard edged metal kind of sound.... You eventually get to a true square wave. Some early fuzzboxes actually did this.... This can sound OK, even useful, unless you hit two notes at once, then makes an unpleasant harsh distortion from the two (intermodulation distortion)."</ref> Most power chords are also played with a consistent finger arrangement that can be slid easily up and down the [[fingerboard|fretboard]].<ref>Schonbrun (2006), p. 22</ref>

[[Image:Addicted to chaos transcirption and analysis.jpg|520px|thumb|center|The main riff from [[Megadeth]]'s "Addicted to Chaos" is an example of a heavy metal riff incorporating several types of [[power chord]]s]]

==== Typical harmonic relationships ====
Heavy metal is usually based on [[riff]]s created with three main harmonic traits: modal scale progressions, tritone and chromatic progressions, and the use of pedal points.

'''Modal harmony'''
[[Image:Btl transcription and harmonic analysis.nwc.jpg|500px|thumb|right|Example of a typical heavy metal [[Aeolian mode|Aeolian]] harmonic progression in I-VI-VII (Am-F-G): the main riff of [[Judas Priest]]'s "[[Breaking the Law]]"]]
Traditional heavy metal tends to employ modal scales, in particular the [[Aeolian mode|Aeolian]] and [[Phrygian mode]]s.<ref>Walser (1993), p. 46</ref> Harmonically speaking, this means the genre typically incorporates modal chord progressions such as the Aeolian progressions I-VI-VII, I-VII-(VI), or I-VI-IV-VII and Phrygian progressions implying the relation between I and ♭II (I-♭II-I, I-♭II-III, or I-♭II-VII for example).

Aeolian harmony is used in songs such as Judas Priest's "[[Breaking the Law]]", Iron Maiden's "[[Hallowed Be Thy Name]]", and [[Accept]]'s "Princess of the Dawn", each employing a I-VI-VII progression as its main riff. Phrygian harmony is used in songs such as [[Mercyful Fate]]'s "Gypsy" (main riff I-♭II-I-VI-V), [[Megadeth]]'s "Symphony of Destruction" (main riff built on the ♭II-I relation), and [[Sodom (band)|Sodom]]'s "Remember the Fallen" (Introduction + main riff—the riff closing implies a Phrygian [[Cadence (music)|cadence]]: I-♭II-III).

'''Tritone and chromatism'''
[[Image:Black sabbath- transcription by Frederick Duhautpas.jpg|500px|thumb|right|Example of a harmonic progression with the tritone G-C#: the main riff of "[[Black Sabbath (song)|Black Sabbath]]"]]
Tense-sounding [[chromatic]] or [[tritone]] relationships are used in a number of metal chord progressions.<ref>Marshall, Wolf. "Power Lord—Climbing Chords, Evil Tritones, Giant Callouses," ''Guitar Legends'', April 1997, p. 29</ref><ref name="MH">Dunn, Sam (2005). "[http://www.metalhistory.com Metal: A Headbanger's Journey]". Warner Home Video (2006). Retrieved on March 19, 2007</ref> The tritone, an interval spanning three whole tones—such as C and F#—was a forbidden dissonance in medieval ecclesiastical singing, which led monks to call it ''diabolus in musica''—"the devil in music."<ref>The first explicit prohibition of that interval seems to occur with the "development of [[Guido of Arezzo]]'s [[hexachord]]al system which made B flat a [[diatonic]] note, namely as the 4th degree of the hexachordal on F. From then until the end of Renaissance the tritone, nicknamed the 'diabolus in musica', was regarded as an unstable interval and rejected as a consonance" (Sadie, Stanley [1980]. "Tritone", in ''The New Grove Dictionary of Music and Musicians'', 1st ed. MacMillan, pp. 154–5. ISBN 0-333-23111-2. See also Arnold, Denis [1983]. "Tritone", in ''The New Oxford Companion to Music, Volume 1: A-J''. Oxford University Press. ISBN 0-19-311316-3). During the [[Baroque music|Baroque]] and [[Classical period (music)|Classical]] eras, the interval came to be accepted, though in a specific, controlled way. It is only during the [[Romantic music|Romantic era]] and in [[20th century classical music|modern classical music]] that composers have used it freely, exploiting the evil connotations with which it is culturally associated.</ref> Because of that original symbolic association, it came to be heard in Western cultural convention as "evil". Heavy metal has made extensive use of the tritone in guitar solos and riffs, such as in the beginning of "[[Black Sabbath (song)|Black Sabbath]]".

'''Pedal point'''<br/>
Heavy metal songs often make extensive use of [[pedal point]] as a harmonic basis. A pedal point is a sustained tone, typically in the bass range, during which at least one foreign (i.e., dissonant) harmony is sounded in the other parts.<ref>Kennedy (1985), "Pedal Point," p. 540</ref> Heavy metal riffs are frequently constructed over a persistent repeating note played on the low strings of the bass or rhythmic guitar, most usually on the E, A, and D strings.<ref>In black metal, however, pedal point is seldom a component of the guitar riff itself, but is rather played in the background by the bass.</ref> In other words, a single bass note—most frequently low E or A—is persistently repeated while some different chords are successively played, including chords that do not normally incorporate that bass note, which creates a sense of tension. An example is the opening riff of Judas Priest's "[[You've Got Another Thing Comin']]". In this case, one guitar plays the pedal point in F#, while the second guitar plays the chords.

==== Classical influence ====
Robert Walser argues that, alongside blues and R&B, the "assemblage of disparate musical styles known...as 'classical music'" has been a major influence on heavy metal since the genre's earliest days. He claims that metal's "most influential musicians have been guitar players who have also studied classical music. Their appropriation and adaptation of classical models sparked the development of a new kind of guitar virtuosity [and] changes in the harmonic and melodic language of heavy metal."<ref>Walser (1993), p. 58</ref>

[[Image:YngwieMalmsteen.jpg|thumb|[[Yngwie Malmsteen]] in concert]]
The appropriation of "classical" music by heavy metal musicians typically involves musical elements associated with the [[Baroque]], [[Classical music|Classical]], and [[Romantic music|Romantic]] eras of art music. [[Deep Purple]]/[[Rainbow (band)|Rainbow]] guitarist [[Ritchie Blackmore]] and [[Scorpions (band)|Scorpions]] guitarist [[Uli Jon Roth]] began experimenting with musical figurations borrowed from classical music in the early 1970s. In the 1980s, guitarists [[Randy Rhoads]] and [[Yngwie Malmsteen]] used eighteenth-century Baroque and later classical compositions as models, inspiring neoclassical metal players including [[Michael Romeo]], [[Michael Angelo Batio]], and [[Tony MacAlpine]].

Although a number of metal musicians cite classical composers as inspiration, heavy metal cannot be regarded as the modern descendant of classical music.<ref>Historical classical music's true descendant is [[contemporary classical music]].</ref> Classical and metal are rooted in different cultural traditions and practices—classical in the [[art music]] tradition, metal in the [[popular music]] tradition. As musicologists Nicolas Cook and Nicola Dibben note, "Analyses of popular music also sometimes reveal the influence of 'art traditions.' An example is Walser’s linkage of heavy metal music with the ideologies and even some of the performance practices of nineteenth-century Romanticism. However, it would be clearly wrong to claim that traditions such as blues, rock, heavy metal, rap or dance music derive primarily from 'art music.'"<ref>See Cook and Dibben (2001), p. 56</ref> Heavy metal borrows only some aspects of classical music, such as [[motif (music)|motifs]], melodies, and scales, rather than more complex features, such as [[counterpoint]], [[polyphony]], and [[Structure#Musical_composition|classical structural forms]]. Heavy metal bands, including [[Progressive metal|progressive]] and [[neoclassical metal]] bands, generally do not seek to observe the compositional and aesthetical exigencies of classical music.

=== Lyrical themes ===
Common themes in heavy metal lyrics are sex, violence, and the occult. The sexual nature of many heavy metal songs, ranging from Led Zeppelin's suggestive lyrics to the more explicit references of latter-day nu metal bands, derives from the genre's roots in blues music and its frequently sexual content.<ref>Weinstein (1991), p. 36</ref> Since the 1980s, with the rise of thrash metal, a substantial number of metal songs have included sociopolitical commentary. Romantic tragedy is a standard theme of gothic and doom metal, as well as of nu metal, where teenage angst is another central topic. Genres such as melodic death metal, progressive metal, and black metal often explore philosophical themes, while more extreme forms of death metal and grindcore have purely aggressive, gory, and often unintelligible content.

Heavy metal songs often feature outlandish, fantasy-inspired lyrics, lending them an escapist quality. Iron Maiden's songs, for instance, were frequently inspired by mythology, fiction, and poetry, such as "[[Rime of the Ancient Mariner (song)|Rime of the Ancient Mariner]]," based on the [[Samuel Taylor Coleridge]] [[Rime of the Ancient Mariner|poem]]. Other examples include Black Sabbath's "The Wizard," [[Megadeth]]'s "The Conjuring" and "Five Magics," and Judas Priest's "Dreamer Deceiver." Other artists base their lyrics on war, nuclear annihilation, environmental issues, politics, and society or religion. Examples include Black Sabbath's "[[War Pigs (song)|War Pigs]]," [[Ozzy Osbourne]]'s "Killer of Giants," Metallica's ''[[...And Justice for All (song)|...And Justice for All]]'', Iron Maiden's "[[2 Minutes to Midnight]]," Accept's "[[Balls to the Wall]]," and Megadeth's "[[Peace Sells]]." Death is a predominant theme in heavy metal, routinely featuring in the lyrics of such different bands as Black Sabbath, [[Slayer]], and [[W.A.S.P. (band)|W.A.S.P.]]

The thematic content of heavy metal has long been a target of criticism. According to Jon Pareles, "Heavy metal's main subject matter is simple and virtually universal. With grunts, moans and subliterary lyrics, it celebrates...a party without limits.... [T]he bulk of the music is stylized and formulaic."<ref name="JP"/> Music critics have often deemed metal lyrics juvenile and banal, and others have objected to what they see as advocacy of [[misogyny]] and the occult. During the 1980s, the [[Parents Music Resource Center]] petitioned the U.S. Congress to regulate the popular music industry due to what the group asserted were objectionable lyrics, particularly those in heavy metal songs. In 1990, Judas Priest was sued by the parents of two young men who had shot themselves five years earlier, allegedly after hearing the subliminal statement "do it" in a Priest song. While the case attracted a great deal of media attention, it was ultimately dismissed.<ref>See, e.g., Ewing and McCann (2006), pp. 104–113</ref>

=== Visual elements ===
{{main article|Heavy metal fashion}}
[[Image:KISS in concert Boston 2004.jpg|thumb|[[Kiss (band)|Kiss]] performing in 2004, wearing their famous makeup]]
As with much popular music, visual imagery plays a large role in heavy metal. In addition to its sound and lyrics, a heavy metal band's "image" is expressed in album sleeve art, stage sets, the clothes of the band, band logos, and [[music video]]s.<ref>Weinstein (2000), p. 27</ref> Some early heavy metal acts, such as [[Alice Cooper]] and [[Kiss (band)|Kiss]] and some newer bands such as [[Slipknot]], [[Marilyn Manson (band)|Marilyn Manson]], and [[GWAR]] have become known as much for their outrageous performance personas and stage shows as for their music.<ref>Van Zoonen (2005), p. 40.</ref>

Down-the-back long hair, according to Weinstein, is the "most crucial distinguishing feature of metal fashion."<ref>Weinstein (2000), p. 129</ref> Originally adopted from the hippie subculture, by the 1980s and 1990s heavy metal hair "symbolised the hate, angst and disenchantment of a generation that seemingly never felt at home," according to journalist Nader Rahman. Long hair gave members of the metal community "the power they needed to rebel against nothing in general."<ref>Rahman, Nader. [http://www.thedailystar.net/magazine/2006/07/04/musings.htm "Hair Today Gone Tomorrow"]. ''Star Weekend Magazine'', July 28, 2006. Retrieved on November 20, 2007.</ref>

The classic uniform of heavy metal fans consists of "blue jeans, black T-shirts, boots and black leather or jeans jackets.... T-shirts are generally emblazoned with the logos or other visual representations of favorite metal bands."<ref>Weinstein (2000), p. 127</ref> In the mid-1970s, Judas Priest and Mötorhead helped establish elements of [[motorcycle gang|biker culture]] and [[leather jacket|leather fashion]] in the heavy metal scene.<ref name="Covach">Covach, John. [http://www2.wwnorton.com/college/music/rockhistory/outlines/ch12.htm "Heavy Metal, Rap, and the Rise of Alternative Rock (1982–1992)"] ''What's That Sound? An Introduction to Rock and its History'' (W. W. Norton). Retrieved on November 16, 2007.</ref><ref>{{cite news | url=http://members.firstinter.net/markster/KILLINGMACHINE.html| title=Hell Bent for Leather/Killing Machine Info Page | publisher=Judas Priest Info Pages}}</ref> Metal fans also "appropriated elements from the S&M community (chains, metal studs, skulls, leather and crosses)." In the 1980s, a range of sources, from punk and [[goth]] music to horror films, influenced metal fashion.<ref name="Umelec">Pospiszyl, Tomáš. [http://www.divus.cz/umelec/en/pages/umelec.php?id=13&roc=2001&cis=1 "Heavy Metal"]. ''Umelec'', January 2001. Retrieved on November 20, 2007.</ref> Many metal performers of the 1970s and 1980s used radically shaped and brightly colored instruments to enhance their stage appearance. Fashion and personal style was especially important for glam metal bands of the era. Performers typically wore long, dyed, hairspray-teased hair (hence the nickname, "hair metal"); makeup such as lipstick and eyeliner; gaudy clothing, including leopard-skin-printed shirts or vests and tight denim, leather, or spandex pants; and accessories such as headbands and jewelry.<ref>Thompson (2007), p. 135; Blush, Steven. [http://feralhouse.com/press/mini_sites/american_hair_metal/excerpts.php "''American Hair Metal''—Excerpts: Selected Images and Quotes"]. FeralHouse.com. Retrieved on November 25, 2007.</ref> Pioneered by the heavy metal act [[X Japan]] in the late 1980s, bands in the Japanese movement known as [[visual kei]]—which includes many nonmetal groups—emphasize elaborate costumes, hair, and makeup.<ref>{{cite web|author=Strauss, Neil| url=http://query.nytimes.com/gst/fullpage.html?res=9D00EFD7103DF93BA25755C0A96E958260&sec=&spon=&pagewanted=all| title=The Pop Life: End of a Life, End of an Era|date=1998-06-18| work=The New York Times|accessdate=2008-05-09}}</ref>

=== Physical gestures ===
[[Image:Metsatöll at Tuska 2006.jpg|thumb|Fans raise their fists and make the "devil horns" gesture at a concert by Estonian heavy metal group [[Metsatöll]] in 2006]]
Many metal musicians when performing live engage in [[headbanging]], which involves rhythmically beating time with the head, often emphasized by long hair. The [[corna]], or devil horns, hand gesture, also widespread, was popularized by vocalist [[Ronnie James Dio]] while with Black Sabbath and [[Dio]].<ref name="MH"/> [[Gene Simmons]] of [[Kiss (band)|Kiss]] claims to have been the first to make the gesture in concert.<ref>Appleford, Steve. "[http://www.mk-magazine.com/news/archives/000929.php Odyssey of the Devil Horns]". ''MK Magazine'', September 9, 2004. Retrieved on March 31, 2007.</ref>

Attendees of metal concerts do not dance in the usual sense; Deena Weinstein has argued that this is due to the music's largely male audience and "extreme heterosexualist ideology." She identifies two primary body movements that substitute for dancing: headbanging and an arm thrust that is both a sign of appreciation and a rhythmic gesture.<ref>Weinstein, p. 130</ref> The performance of [[air guitar]] is popular among metal fans both at concerts and listening to records at home.<ref>Weinstein, p. 95</ref> Other concert audience activities include [[stage diving]], [[crowd surfing]], pushing and shoving in a chaotic mélée called [[moshing]], and displaying the corna hand symbol.

=== Fan subculture ===
{{main article|Metalhead}}

Deena Weinstein argues that heavy metal has outlasted many other rock genres largely due to the emergence of an intense, exclusionary, strongly masculine subculture.<ref>Weinstein, pp. 103, 7, 8, 104</ref> While the metal fanbase is largely young, white, male, and blue-collar, the group is "tolerant of those outside its core demographic base who follow its codes of dress, appearance, and behavior.”<ref>Weinstein, pp. 102, 112</ref> Identification with the subculture is strengthened not only by the shared experience of concert-going and shared elements of fashion, but also by contributing to metal magazines and, more recently, websites.<ref>Weinstein, pp. 181, 207, 294</ref>

The metal scene has been characterized as a "subculture of alienation", with its own code of authenticity.<ref name="JQS">"Three profiles of heavy metal fans: A taste for sensation and a subculture of alienation." In ''Journal Qualitative Sociology''. Publisher Springer Netherlands. ISSN 0162-0436 (Print) 1573-7837 (Online). Volume 16, Number 4 / December 1993. Pages 423-443</ref> This code puts several demands on performers: they must appear both completely devoted to their music and loyal to the subculture that supports it; they must appear disinterested in mainstream appeal and radio hits; and they must never “sell out”.<ref>Weinstein, pp. 46, 60, 154, 273</ref> For the fans themselves, the code promotes “opposition to established authority, and separateness from the rest of society.”<ref>Weinstein, pp. 166</ref> Scholars of metal have noted the tendency of fans to classify and reject some performers (and some other fans) as "[[poseur (music)|poseur]]s" "who pretended to be part of the subculture, but who were deemed to lack authenticity and sincerity."<ref name="JQS"/><ref>Arnett, Jeffrey Jensen (1996). ''Metalheads: Heavy Metal Music and Adolescent Alienation''</ref>

== Etymology ==
The origin of the term ''heavy metal'' in a musical context is uncertain. The phrase has been used for centuries in chemistry and metallurgy. An early use of the term in modern popular culture was by [[counterculture|countercultural]] writer [[William S. Burroughs]]. His 1962 novel ''[[The Soft Machine]]'' includes a character known as "Uranian Willy, the Heavy Metal Kid." Burroughs's next novel, ''[[Nova Express]]'' (1964), develops the theme, using ''heavy metal'' as a metaphor for addictive drugs: "With their diseases and orgasm drugs and their sexless parasite life forms—Heavy Metal People of Uranus wrapped in cool blue mist of vaporized bank notes—And The Insect People of Minraud with metal music."<ref>[[William S. Burroughs|Burroughs, William S]]. "[http://www.efn.org/~dredmond/PP3.html Nova Express]". New York: Grove Press, 1964. Pg. 112</ref>

Metal historian [[Ian Christe]] describes what the components of the term mean in "hippiespeak": "heavy" is roughly synonymous with "potent" or "profound," and "metal" designates a certain type of mood, grinding and weighted as with metal.<ref>Christe (2003), p. 10</ref> The word "heavy" in this sense was a basic element of [[beatnik]] and later countercultural [[slang]], and references to "heavy music"—typically slower, more amplified variations of standard pop fare—were already common by the mid-1960s. [[Iron Butterfly]]'s debut album, released in early 1968, was titled ''[[Heavy (album)|Heavy]]''. The first recorded use of ''heavy metal'' is a reference to a motorcycle in the [[Steppenwolf (band)|Steppenwolf]] song "[[Born to Be Wild]]," also released that year:<ref>Walser (1993), p. 8</ref> "I like smoke and lightning/Heavy metal thunder/Racin' with the wind/And the feelin' that I'm under." A late, and disputed, claim about the source of the term was made by [[Chas Chandler|"Chas" Chandler]], former manager of the [[Jimi Hendrix Experience]]. In a 1995 interview on the [[PBS]] program ''Rock and Roll'', he asserted that heavy metal "was a term originated in a ''New York Times'' article reviewing a [[Jimi Hendrix]] performance," in which the author likened the event to "listening to heavy metal falling from the sky." A source for Chandler's claim has never been found.

The first documented uses of the phrase to describe a type of rock music are from reviews by critic [[Mike Saunders]]. In the November 12, 1970, issue of ''[[Rolling Stone]]'', he commented on an album put out the previous year by the British band [[Humble Pie]]: "''[[As Safe As Yesterday Is|Safe As Yesterday Is]],'' their first American release, proved that Humble Pie could be boring in lots of different ways. Here they were a noisy, unmelodic, heavy metal-leaden shit-rock band with the loud and noisy parts beyond doubt. There were a couple of nice songs...and one monumental pile of refuse." He described the band's latest, [[Humble Pie (album)|self-titled release]] as "more of the same 27th-rate heavy metal crap."<ref>{{cite web|title=Humble Pie: "Town and Country" (review)|author=Saunders, Mike|work=Rolling Stone|date=[[1970-11-12]]|url=http://www.rollingstone.com/artists/humblepie/albums/album/158628/review/5944670/town_and_country | accessdate=2007-12-17}}</ref> In a review of [[Sir Lord Baltimore]]'s ''[[Kingdom Come (Sir Lord Baltimore album)|Kingdom Come]]'' in the May 1971 ''[[Creem]]'', Saunders wrote, "Sir Lord Baltimore seems to have down pat most all the best heavy metal tricks in the book."<ref>{{cite web|title=Sir Lord Baltimore's "Kingdom Come" (review)|author=Saunders, Mike|work=Creem|month=May | year=1971|url=http://www.creemmagazine.com/_site/BeatGoesOn/SirLordBaltimore/KingdomCome001.html | accessdate=2007-03-17}}</ref> ''Creem'' critic [[Lester Bangs]] is credited with popularizing the term via his early 1970s essays on bands such as Led Zeppelin and Black Sabbath.<ref>Weinstein (1991), p. 19</ref> Through the decade, ''heavy metal'' was used by certain critics as a virtually automatic putdown. In 1979, lead ''New York Times'' popular music critic [[John Rockwell]] described what he called "heavy-metal rock" as "brutally aggressive music played mostly for minds clouded by drugs,"<ref>Rockwell, John. ''New York Times'', February 4, 1979, p. D22</ref> and, in a different article, as "a crude exaggeration of rock basics that appeals to white teenagers."<ref>Rockwell, John. ''New York Times'', August 13, 1979, p. C16</ref>

The terms "heavy metal" and "hard rock" have often been used interchangeably, particularly in discussing bands of the 1970s, a period when the terms were largely synonymous.<ref>Du Noyer (2003), pp. 96, 78</ref> For example, the 1983 ''Rolling Stone Encyclopedia of Rock & Roll'' includes this passage: "known for its aggressive blues-based hard-rock style, [[Aerosmith]] was the top American heavy-metal band of the mid-Seventies."<ref>Pareles and Romanowski (1983), p. 4</ref> Few would now characterize Aerosmith's classic sound, with its clear links to traditional [[rock and roll]], as "heavy metal."

== History ==
=== Antecedents: mid-1960s ===
American [[blues music]] was a major influence on the early British rockers. Bands like [[The Rolling Stones]] and [[The Yardbirds]] developed [[blues-rock]] by recording covers of many classic blues songs, often speeding up the [[tempo]]s. As they experimented with the music, the UK blues-based bands—and the U.S. acts they influenced in turn—developed what would become the hallmarks of heavy metal: At the core was a loud, distorted guitar style, built around power chords.<ref name = "vdqxbw"/> [[The Kinks]] played a major role in popularizing this sound with their 1964 hit "[[You Really Got Me]]."<ref>Weinstein (1991), p. 18; Walser (1993), p. 9</ref> A significant contributor to the emerging guitar sound was the [[feedback]] facilitated by the new generation of amplifiers. In addition to The Kinks' [[Dave Davies]], other guitarists such as [[The Who]]'s [[Pete Townshend]] and the Tridents' [[Jeff Beck]] were experimenting with feedback.<ref>Wilkerson (2006), p. 19.</ref> Where the blues-rock drumming style started out largely as simple shuffle beats on small kits, drummers began using a more muscular, complex, and amplified approach to match and be heard against the increasingly loud guitar.<ref name = "eyaqji">Walser (1993), p. 10</ref> Vocalists similarly modified their technique and increased their reliance on amplification, often becoming more stylized and dramatic. In terms of sheer volume, especially in live performance, The Who's "bigger-louder-wall-of-[[Marshall Amplification#Marshall Stack|Marshall]]s" approach was seminal.<ref>McMichael (2004), p. 112</ref> Simultaneous advances in amplification and recording technology made it possible to successfully capture the power of this heavier approach on record.

The combination of blues-rock with psychedelic rock formed much of the original basis for heavy metal.<ref>Weinstein (1991), p. 16</ref> One of the most influential bands in forging the merger of genres was the power trio [[Cream (band)|Cream]], who derived a massive, heavy sound from [[unison]] riffing between guitarist [[Eric Clapton]] and bassist [[Jack Bruce]], as well as [[Ginger Baker]]'s double bass drumming.<ref>Charlton (2003), pp. 232–33</ref> Their first two LPs, ''[[Fresh Cream]]'' (1966) and ''[[Disraeli Gears]]'' (1967), are regarded as essential prototypes for the future style. The Jimi Hendrix Experience's debut album, ''[[Are You Experienced (album)|Are You Experienced]]'' (1967), was also highly influential. Hendrix's virtuosic technique would be emulated by many metal guitarists and the album's most successful single, "[[Purple Haze]]," is identified by some as the first heavy metal hit.<ref name = "vdqxbw"/>

=== Origins: late 1960s and early 1970s ===
In 1968, the sound that would become known as heavy metal began to coalesce. That January, the San Francisco band [[Blue Cheer]] released a cover of [[Eddie Cochran]]'s classic "[[Summertime Blues]]," from their debut album ''[[Vincebus Eruptum]]'', that many consider the first true heavy metal recording.<ref>McCleary (2004), pp. 240, 506.</ref> The same month, [[Steppenwolf (band)|Steppenwolf]] released its [[Steppenwolf (album)|self-titled debut album]], including "[[Born to Be Wild]]," with its "heavy metal" lyric. In July, another two epochal records came out: The Yardbirds' "Think About It"—B-side of the band's last single—with a performance by guitarist [[Jimmy Page]] anticipating the metal sound he would soon make famous; and [[Iron Butterfly]]'s ''[[In-A-Gadda-Da-Vida (album)|In-A-Gadda-Da-Vida]]'', with its 17-minute-long [[In-A-Gadda-Da-Vida (song)|title track]], a prime candidate for first-ever heavy metal album. In August, [[The Beatles]]' single version of "[[Revolution (song)|Revolution]]," with its redlined guitar and drum sound, set new standards for distortion in a top-selling context. The [[Jeff Beck Group]], whose leader had preceded Page as The Yardbirds' guitarist, released its debut record that same month: ''[[Truth (album)|Truth]]'' featured some of the "most molten, barbed, downright funny noises of all time," breaking ground for generations of metal ax-slingers.<ref>Gene Santoro, quoted in Carson (2001), p. 86.</ref> In October, Page's new band, [[Led Zeppelin]], made its live debut. In November, [[Love Sculpture]], with guitarist [[Dave Edmunds]], put out ''Blues Helping'', featuring a pounding, aggressive version of [[Khachaturian]]'s "[[Sabre Dance]]." The Beatles' so-called ''[[The Beatles (album)|White Album]]'', which also came out that month, included "[[Helter Skelter (song)|Helter Skelter]]," then one of the heaviest-sounding songs ever released by a major band.<ref>Blake (1997), p. 143</ref> [[The Pretty Things]]' [[rock opera]] ''[[S.F. Sorrow]]'', released in December, featured "proto heavy metal" songs such as "Old Man Going."<ref>{{cite web|author=Strauss, Neil | title=The Pop Life: The First Rock Opera (No, Not "Tommy")| work = New York Times | date=1998-09-03 | url=http://query.nytimes.com/gst/fullpage.html?res=9F05E0D6133FF930A3575AC0A96E958260 | accessdate=2008-06-26}}</ref>

[[Image:ZepInParis.jpg|left|thumb|180px|[[Led Zeppelin]] performing in June 1969 for the French TV show ''Tous en scène'']]
In January 1969, Led Zeppelin's [[Led Zeppelin (album)|self-titled debut album]] was released and reached number 10 on the ''[[Billboard magazine|Billboard]]'' album chart. In July, Zeppelin and a power trio with a Cream-inspired, but cruder sound, [[Grand Funk Railroad]], played the [[Atlanta International Pop Festival (1969)|Atlanta Pop Festival]]. That same month, another Cream-rooted trio led by [[Leslie West]] released ''Mountain'', an album filled with heavy blues-rock guitar and roaring vocals. In August, the group—now itself dubbed [[Mountain (band)|Mountain]]—played an hour-long set at the [[Woodstock Festival]].<ref>Though often identified now as "hard rock," the band's official debut album, ''Mountain Climbing'' (1970), placed 85th on the list of "Top 100 Metal Albums" compiled by ''[[Hit Parader]]'' in 1989. Grand Funk Railroad's ''Survival'' (1971) placed 72nd (Walser [1993], p. 174).</ref> Grand Funk's debut album, ''[[On Time]]'', also came out that month. In the fall, ''[[Led Zeppelin II]]'' went to number 1 and the album's single "[[Whole Lotta Love]]" hit number 4 on the ''Billboard'' pop chart. The metal revolution was under way.
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Led Zeppelin defined central aspects of the emerging genre, with Page's highly distorted guitar style and singer [[Robert Plant]]'s dramatic, wailing vocals.<ref>Charlton (2003), p. 239</ref> Other bands, with a more consistently heavy, "purely" metal sound, would prove equally important in codifying the genre. The 1970 releases by [[Black Sabbath]] (''[[Black Sabbath (album)|Black Sabbath]]'' and ''[[Paranoid (album)|Paranoid]]'') and [[Deep Purple]] (''[[In Rock (Deep Purple album)|In Rock]]'') were crucial in this regard.<ref name = "eyaqji"/> Black Sabbath had developed a particularly heavy sound in part due to an industrial accident guitarist [[Tony Iommi]] suffered before cofounding the band. Unable to play normally, Iommi had to tune his guitar down for easier fretting and rely on power chords with their relatively simple fingering.<ref>di Perna, Alan. "The History of Hard Rock: The 70's." ''Guitar World''. March 2001.</ref> Deep Purple had fluctuated between styles in its early years, but by 1969 vocalist [[Ian Gillan]] and guitarist [[Ritchie Blackmore]] had led the band toward the developing heavy metal style.<ref>Charlton (2003), p. 241</ref> In 1970, Black Sabbath and Deep Purple scored major UK chart hits with "[[Paranoid (song)|Paranoid]]" and "[[Black Night]]," respectively. That same year, three other British bands released debut albums in a heavy metal mode: [[Uriah Heep (band)|Uriah Heep]] with ''[[Very 'eavy... Very 'umble]]'', [[UFO (band)|UFO]] with ''[[Unidentified Flying Object (album)|UFO 1]]'', and [[Black Widow (band)|Black Widow]] with ''Sacrifice''. [[Wishbone Ash]], though not commonly identified as metal, introduced a dual-lead/rhythm-guitar style that many metal bands of the following generation would adopt. [[Budgie (band)|Budgie]] brought the new metal sound into a power trio context. The occult lyrics and imagery employed by Black Sabbath, Uriah Heep, and Black Widow would prove particularly influential; Led Zeppelin also began foregrounding such elements with its [[Led Zeppelin IV|fourth album]], released in 1971.
[[Image:BlackSabbath19720012200.sized.jpg|left|thumb|180px|[[Tony Iommi]] and [[Ozzy Osbourne]] of [[Black Sabbath]] onstage on January 29, 1973]]
On the other side of the Atlantic, the trend-setting group was Grand Funk Railroad, "the most commercially successful American heavy-metal band from 1970 until they disbanded in 1976, [they] established the Seventies success formula: continuous touring."<ref>Pareles and Romanowski (1983), p. 225</ref> Other bands identified with metal emerged in the U.S., such as [[Dust (band)|Dust]] (first LP in 1971), [[Blue Öyster Cult]] ([[Blue Öyster Cult (album)|1972]]), and [[Kiss (band)|Kiss]] ([[Kiss (album)|1974]]). In Germany, the [[Scorpions (band)|Scorpions]] debuted with ''[[Lonesome Crow]]'' in 1972. Blackmore, who had emerged as a virtuoso soloist with Deep Purple's ''[[Machine Head (album)|Machine Head]]'' (1972), quit the group in 1975 to form [[Rainbow (band)|Rainbow]]. These bands also built audiences via constant touring and increasingly elaborate stage shows.<ref name = "eyaqji"/> As described above, there are arguments about whether these and other early bands truly qualify as "heavy metal" or simply as "hard rock." Those closer to the music's blues roots or placing greater emphasis on melody are now commonly ascribed the latter label. [[AC/DC]], which debuted with ''[[High Voltage (Australian album)|High Voltage]]'' in 1975, is a prime example. The 1983 ''Rolling Stone'' encyclopedia entry begins, "Australian heavy-metal band AC/DC..."<ref>Pareles and Romanowski (1983), p. 1</ref> Rock historian Clinton Walker writes, "Calling AC/DC a heavy metal band in the seventies was as inaccurate as it is today.... [They] were a rock'n'roll band that just happened to be heavy enough for metal."<ref>Walker (2001), p. 297</ref> The issue is not only one of shifting definitions, but also a persistent distinction between musical style and audience identification: Ian Christe describes how the band "became the stepping-stone that led huge numbers of hard rock fans into heavy metal [[perdition]]."<ref>Christe (2003), p. 54</ref>

In certain cases, there is little debate. After Black Sabbath, the next major example is Britain's [[Judas Priest]], which debuted with ''[[Rocka Rolla]]'' in 1974. In Christe's description, Black Sabbath's
<blockquote>
audience was ... left to scavenge for sounds with similar impact. By the mid-1970s, heavy metal aesthetic could be spotted, like a mythical beast, in the moody bass and complex dual guitars of [[Thin Lizzy]], in the stagecraft of [[Alice Cooper]], in the sizzling guitar and showy vocals of [[Queen (band)|Queen]], and in the thundering medieval questions of Rainbow .... Judas Priest arrived to unify and amplify these diverse highlights from hard rock's sonic palette. For the first time, heavy metal became a true genre unto itself.<ref>Christe (2003), pp. 19–20</ref>
</blockquote>
Though Judas Priest did not have a top 40 album in the U.S. until 1980, for many it was the definitive post-Sabbath heavy metal band; its twin-guitar attack, featuring rapid tempos and a nonbluesy, more cleanly metallic sound, was a major influence on later acts.<ref>Walser (1993), p. 6</ref> While heavy metal was growing in popularity, most critics were not enamored of the music. Objections were raised to metal's adoption of visual spectacle and other trappings of commercial artifice,<ref name = "gnwtey">Walser (1993), p. 11</ref> but the main offense was its perceived musical and lyrical vacuity: reviewing a Black Sabbath album in the early 1970s, leading critic [[Robert Christgau]] described it as "dull and decadent...dim-witted, amoral exploitation."<ref>Christgau (1981), p. 49</ref>

=== Mainstream: late 1970s and 1980s ===
[[Image:Iron Maiden - bass and guitars 30nov2006.jpg|thumb|right|200px|[[Iron Maiden]] were one of the central bands in the [[New Wave of British Heavy Metal]]]]
[[Punk rock]] emerged in the mid-1970s as a reaction against contemporary social conditions as well as what was perceived as the overindulgent, overproduced rock music of the time, including heavy metal. Sales of heavy metal records declined sharply in the late 1970s in the face of punk, [[disco]], and more mainstream rock.<ref name = "gnwtey"/> With the major labels fixated on punk, many newer British heavy metal bands were inspired by the movement's aggressive, high-energy sound and "[[Low fidelity|lo-fi]]", [[do it yourself]] ethos. Underground metal bands began putting out cheaply recorded releases independently to small, devoted audiences.<ref>Christe (2003), pp. 30, 33</ref> [[Motörhead]], founded in 1975, was the first important band to straddle the punk/metal divide. With the explosion of punk in 1977, others followed. British music papers such as the ''[[NME]]'' and ''[[Sounds (magazine)|Sounds]]'' took notice, with ''Sounds'' writer Geoff Barton christening the movement the "[[New Wave of British Heavy Metal]]."<ref>Christe (2003), p. 33</ref> NWOBHM bands including [[Iron Maiden]], [[Saxon (band)|Saxon]], and [[Def Leppard]] reenergized the heavy metal genre. Following the lead set by Judas Priest and Motörhead, they toughened up the sound, reduced its blues elements, and emphasized increasingly fast tempos.<ref>{{cite web|title="Judas Priest"|author=Erlewine, Stephen Thomas, and Greg Prato|publisher=Allmusic|date=|url=http://www.allmusic.com/cg/amg.dll?p=amg&searchlink=JUDAS|PRIEST&sql=11:kifrxqe5ldse~T1|accessdate=2007-04-30}} {{cite web|title="Genre—New Wave of British Heavy Metal|author=|publisher=Allmusic|date=|url=http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:7760|accessdate=2007-03-17}}</ref> In 1980, NWOBHM broke into the mainstream, as albums by Iron Maiden and Saxon, as well as Motörhead, reached the British top 10. Though less commercially successful, other NWOBHM bands such as [[Venom (band)|Venom]] and [[Diamond Head (band)|Diamond Head]] would have a significant influence on metal's development.<ref>Weinstein (1991), p. 44</ref> In 1981, Motörhead became the first of this new breed of metal bands to top the UK charts with ''[[No Sleep 'til Hammersmith]]''.

The first generation of metal bands was ceding the limelight. Deep Purple had broken up soon after Blackmore's departure in 1975, and Led Zeppelin broke up following drummer [[John Bonham]]'s death in 1980. Black Sabbath was routinely upstaged in concert by its opening act, the [[Los Angeles]] band [[Van Halen]].<ref>Christe (2003), p. 25</ref> [[Eddie Van Halen]] established himself as one of the leading metal guitar virtuosos of the era—his solo on "[[Eruption (song)|Eruption]]," from the band's [[Van Halen (album)|self-titled 1978 album]], is considered a milestone.<ref>Christe (2003), p. 51</ref> [[Randy Rhoads]] and [[Yngwie Malmsteen]] also became famed virtuosos, associated with what would be known as the [[neoclassical metal]] style. The adoption of classical elements had been spearheaded by Blackmore and the Scorpions' [[Uli Jon Roth]]; this next generation progressed to occasionally using classical nylon-stringed guitars, as Rhoads does on "Dee" from former Sabbath lead singer [[Ozzy Osbourne]]'s first solo album, ''[[Blizzard of Ozz]]'' (1980).
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Inspired by Van Halen's success, a metal scene began to develop in Southern California during the late 1970s. Based around the clubs of L.A.'s [[Sunset Strip]], bands such as [[Quiet Riot]], [[Ratt]], [[Mötley Crüe]], and [[W.A.S.P. (band)|W.A.S.P.]] were influenced by traditional heavy metal of the earlier 1970s<ref>Rivadavia, Eduardo. "[http://www.allmusic.com/cg/amg.dll?p=amg&sql=11:6q1tk6rx9kr3 Quiet Riot]". Allmusic. Retrieved on March 25, 2007; Neely, Kim "[http://www.rollingstone.com/artists/ratt/albums/album/211449/review/5946112/detonator Ratt]". Rolling Stone. Retrieved on April 3, 2007; Barry Weber & Greg Prato. "[http://www.allmusic.com/cg/amg.dll?p=amg&sql=11:9yen97l7krrt Mötley Crüe]". Allmusic. Retrieved on April 3, 2007; Dolas, Yiannis. "[http://www.rockpages.gr/detailspage.aspx?id=637&type=1&sub=%20&lang=EN Blackie Lawless Interview]" Rockpages. Retrieved on April 3, 2007</ref> and incorporated the theatrics (and sometimes makeup) of [[glam rock]] acts such as [[Alice Cooper]] and Kiss.<ref>Christe (2003), pp. 55–57</ref> The lyrics of these [[glam metal]] bands characteristically emphasized [[hedonism]] and wild behavior. Musically, the style was distinguished by rapid-fire [[shred guitar]] solos, anthemic choruses, and a relatively pop-oriented melodic approach. The glam metal movement—along with similarly styled acts such as New York's [[Twisted Sister]]—became a major force in metal and the wider spectrum of rock music.

In the wake of the New Wave of British Heavy Metal and Judas Priest's breakthrough ''[[British Steel (album)|British Steel]]'' (1980), heavy metal became increasingly popular in the early 1980s. Many metal artists benefited from the exposure they received on [[MTV]], which began airing in 1981—sales often soared if a band's videos screened on the channel.<ref>Christe (2003), p. 79</ref> Def Leppard's videos for ''[[Pyromania (album)|Pyromania]]'' (1983) made them superstars in America and Quiet Riot became the first domestic heavy metal band to top the ''Billboard'' chart with ''[[Metal Health]]'' (1983). One of the seminal events in metal's growing popularity was the 1983 [[US Festival]] in California, where the "heavy metal day" featuring Ozzy Osbourne, Van Halen, Scorpions, Mötley Crüe, Judas Priest, and others drew the largest audiences of the three-day event.<ref>Weinstein (1991), p. 45</ref> Between 1983 and 1984, heavy metal went from an 8 percent to a 20 percent share of all recordings sold in the U.S.<ref>Walser (1993), p. 12</ref> Several major professional magazines devoted to the genre were launched, including ''[[Kerrang!]]'' (in 1981) and ''[[Metal Hammer]]'' (in 1984), as well as a host of fan journals. In 1985, ''Billboard'' declared, "Metal has broadened its audience base. Metal music is no longer the exclusive domain of male teenagers. The metal audience has become older (college-aged), younger (pre-teen), and more female."<ref>Walser (1993), pp. 12–13, 182 n. 35</ref>

By the mid-1980s, glam metal was a dominant presence on the U.S. charts, [[music television]], and the arena concert circuit. New bands such as L.A.'s [[Warrant (American band)|Warrant]] and acts from the East Coast like [[Poison (band)|Poison]] and [[Cinderella (band)|Cinderella]] became major draws, while Mötley Crüe and Ratt remained very popular. Bridging the stylistic gap between hard rock and glam metal, [[New Jersey]]'s [[Bon Jovi]] became enormously successful with its third album, ''[[Slippery When Wet]]'' (1986). In 1987, MTV launched a show, ''[[Headbanger's Ball]]'', devoted exclusively to heavy metal videos. However, the metal audience had begun to factionalize, with those in many underground metal scenes favoring more extreme sounds and disparaging the popular style as "lite metal" or "hair metal."<ref>Walser (1993), p. 14; Christe (2003), p. 170</ref>

One band that reached diverse audiences was [[Guns N' Roses]]. In contrast to their glam metal contemporaries in L.A., they were seen as much rawer and more dangerous. With the release of their chart-topping ''[[Appetite for Destruction]]'' (1987), they "recharged and almost single-handedly sustained the Sunset Strip sleaze system for several years."<ref>Christe (2003), p. 165</ref> The following year, [[Jane's Addiction]] emerged from the same L.A. hard-rock club scene with its major label debut, ''[[Nothing's Shocking]]''. Reviewing the album, ''Rolling Stone'' declared, "as much as any band in existence, Jane's Addiction is the true heir to Led Zeppelin."<ref>{{cite web|title=Jane's Addiction: ''Nothing's Shocking''|author=Steve Pond|publisher=''Rolling Stone''|date=1988-10-20|url=http://www.rollingstone.com/artists/janesaddiction/albums/album/119704/review/5942383/nothings_shocking|accessdate=2007-05-01}}</ref> The group was one of the first to be identified with the "[[alternative metal]]" trend that would come to the fore in the next decade. Meanwhile, new bands such as New York's [[Winger (band)|Winger]] and New Jersey's [[Skid Row (heavy metal band)|Skid Row]] sustained the popularity of the glam metal style.<ref name="Covach"/>

=== Underground metal: 1980s, 1990s, and 2000s ===
Many [[List of heavy metal genres|subgenres of heavy metal]] developed outside of the commercial mainstream during the 1980s.<ref>Weinstein (1991), p. 21</ref> Several attempts have been made to map the complex world of underground metal, most notably by the editors of [[Allmusic]], as well as critic [[Rockdetector|Garry Sharpe-Young]]. Sharpe-Young's multivolume metal encyclopedia separates the underground into five major categories: [[thrash metal]], [[death metal]], [[black metal]], [[power metal]], and the related subgenres of [[doom metal|doom]] and [[gothic metal]].

==== Thrash metal ====
[[Thrash metal]] emerged in the early 1980s under the influence of [[hardcore punk]] and the New Wave of British Heavy Metal,<ref name="GTM">[http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:373 "Genre—Thrash Metal"]. Allmusic. Retrieved on March 3, 2007.</ref> particularly songs in the revved-up style known as [[speed metal]]. The movement began in the United States, with the leading scene in the [[Bay Area thrash metal|San Francisco Bay Area]]. The sound developed by thrash groups was faster and more aggressive than that of the original metal bands and their glam metal successors.<ref name="GTM"/> Low-register guitar riffs are typically overlaid with [[Shred guitar|shredding]] leads. Lyrics often express [[nihilism|nihilistic]] views or deal with [[social issues]] using visceral, gory language. Thrash has been described as a form of "urban blight music" and "a palefaced cousin of rap."<ref>Moynihan, Søderlind (1998), p. 26</ref>

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The subgenre was popularized by the "Big Four of Thrash": [[Metallica]], [[Anthrax (band)|Anthrax]], [[Megadeth]], and [[Slayer]].<ref>Walser (1993), p.14</ref> Three German bands, [[Kreator]], [[Sodom (band)|Sodom]], and [[Destruction (band)|Destruction]], played a central role in bringing the style to Europe. Others, including San Francisco's [[Testament (band)|Testament]] and [[Exodus (band)|Exodus]], New Jersey's [[Overkill (band)|Overkill]], and Brazil's [[Sepultura]], also had a significant impact. While thrash began as an underground scene, and remained largely that for almost a decade, the leading bands in the movement began to reach a wider audience. Metallica brought the sound into the top 40 of the ''Billboard'' album chart in 1986 with ''[[Master of Puppets]]''; two years later, the band's ''[[...And Justice for All (album)|...And Justice for All]]'' hit number 6, while Megadeth and Anthrax had top 40 records.<ref>[http://www.billboard.com/bbcom/retrieve_chart_history.do?model.chartFormatGroupName=Albums&model.vnuArtistId=5199&model.vnuAlbumId=758988 "Metallica—Artist Chart History"]; [http://www.billboard.com/bbcom/retrieve_chart_history.do?model.chartFormatGroupName=Albums&model.vnuArtistId=5179&model.vnuAlbumId=933608 "Megadeth—Artist Chart History"]; [http://www.billboard.com/bbcom/retrieve_chart_history.do?model.chartFormatGroupName=Albums&model.vnuArtistId=3982&model.vnuAlbumId=728383 "Anthrax—Artist Chart History"]. Billboard.com. Retrieved on April 7, 2007.</ref>

Though less commercially successful than the rest of the Big Four, Slayer released one of the genre's definitive records: ''[[Reign in Blood]]'' (1986) was described by ''Kerrang!'' as the "heaviest album of all time."<ref name="Lostprophets scoop rock honours">{{cite web| title = Lostprophets scoop rock honours | publisher = BBC News | date = [[2006-08-25]]| url = http://news.bbc.co.uk/2/hi/entertainment/5282780.stm| accessdate = 2007-01-10 }}</ref> Two decades later, ''[[Metal Hammer]]'' named it the best album of the preceding twenty years.<ref name="Golden Gods Awards Winners">{{cite web| title = Golden Gods Awards Winners| publisher = Metal Hammer| date = [[2006-06-13]]| url = http://www.metalhammer.co.uk/news/article/?id=44410| accessdate = 2007-01-10 }}</ref> Slayer attracted a following among far-right skinheads, and accusations of promoting violence and Nazi themes have dogged the band.<ref>Moynihan, Søderlind (1998), p. 30; O'Neil (2001), p. 164</ref> In the early 1990s, thrash achieved breakout success, challenging and redefining the metal mainstream.<ref>Walser (1993), p. 15</ref> Metallica's [[Metallica (album)|self-titled 1991 album]] topped the ''Billboard'' chart, Megadeth's ''[[Countdown to Extinction]]'' (1992) hit number 2, Anthrax and Slayer cracked the top 10, and albums by regional bands such as Testament and Sepultura entered the top 100.

==== Death metal ====
[[Image:Chuck Schuldiner.jpg|thumb|120px|[[Death (band)|Death]]'s [[Chuck Schuldiner]], "widely recognized as the father of death metal"<ref>Rivadavia, Eduardo. [http://wc09.allmusic.com/cg/amg.dll?p=amg&sql=11:3iftxqe5ld6e~T1 "Death—Biography"]. Allmusic. Retrieved on November 23, 2007.</ref>]]
Thrash soon began to evolve and split into more extreme metal genres. "Slayer's music was directly responsible for the rise of [[death metal]]", according to MTV News.<ref> [http://www.mtv.com/bands/m/metal/greatest_metal_bands/071406/index7.jhtml The Greatest Metal Bands of All Time—Slayer]. MTVNews.com. Retrieved on February 27, 2008.</ref> The NWOBHM band Venom was also an important progenitor. The death metal movement in both North America and Europe adopted and emphasized the elements of [[blasphemy]] and [[diabolism]] employed by such acts. Florida's [[Death (band)|Death]] and the Bay Area's [[Possessed (band)|Possessed]] are recognized as seminal bands in the style. Both groups have been credited with inspiring the subgenre's name, the latter via its 1984 demo ''Death Metal'' and the song "Death Metal," from its 1985 debut album ''[[Seven Churches (album)|Seven Churches]]'' (1985).

Death metal utilizes the speed and aggression of both thrash and hardcore, fused with lyrics preoccupied with [[Z movie|Z-grade]] [[slasher film|slasher movie]] violence and [[Satanism]].<ref name="LOC27">Moynihan, Søderlind (1998), p. 27</ref> Vocals are typically bleak, involving guttural "[[death growl]]s", high-pitched [[screaming (music)|screaming]], the "death rasp",<ref name="VS">Van Schaik, Mark. [http://www.emptywords.org/SK04-2000.htm "Extreme Metal Drumming"] ''Slagwerkkrant'', March/April 2000. Retrieved on November 15, 2007.</ref> and other uncommon techniques.<ref name="Genre—Death Metal/Black Metal">"[http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:384 Genre—Death Metal/Black Metal]". [[Allmusic]]. Retrieved on February 27, 2007.</ref> Complementing the deep, aggressive vocal style are downtuned, highly [[distortion (guitar)|distorted]] guitars<ref name="LOC27"/><ref name="VS"/> and extremely fast percussion, often with rapid [[bass drum|double bass]] drumming and "[[wall of sound]]"–style [[blast beats]]. Frequent tempo and [[time signature]] changes and [[syncopation]] are also typical.

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Death metal, like thrash metal, generally rejects the theatrics of earlier metal styles, opting instead for an everyday look of ripped jeans and plain leather jackets.<ref name="MS28">Moynihan, Søderlind (1998), p. 28</ref> One major exception to this rule was [[Deicide (band)|Deicide]]'s [[Glen Benton]], who branded an inverted cross on his forehead and wore armor on stage. [[Morbid Angel]] adopted [[neo-fascist]] imagery.<ref name="MS28"/> These two bands, along with Death and [[Obituary (band)|Obituary]], were leaders of the major death metal scene that emerged in Florida in the mid-1980s. In the UK, the related style of [[grindcore]], led by bands such as [[Napalm Death]] and [[Extreme Noise Terror]], emerged out of the [[anarcho-punk]] movement.<ref>Moynihan, Søderlind (1998), p. 27</ref> A large [[Scandinavian death metal]] scene, with bands such as Sweden's [[Entombed (band)|Entombed]] and [[Dismember (band)|Dismember]], began to develop as well. Out of this evolved a [[melodic death metal]] sound, typified by Swedish bands such as [[In Flames]] and [[Dark Tranquillity]] and Finland's [[Children of Bodom]] and [[Kalmah]].

==== Black metal ====
[[Image:Burzum aske.jpg|thumb|130px|Photo of the burned ruins of [[Fantoft stave church]] depicted on [[Burzum]]'s 1992 EP ''[[Aske (album)|Aske]]'']]
The first wave of [[black metal]] emerged in Europe in the early and mid-1980s, led by Britain's Venom, Denmark's [[Mercyful Fate]], Switzerland's [[Hellhammer]] and [[Celtic Frost]], and Sweden's [[Bathory (band)|Bathory]]. By the late 1980s, Norwegian bands such as [[Mayhem (band)|Mayhem]], [[Burzum]], and [[Emperor (band)|Emperor]] were heading a second wave.<ref>Christe (2003), p. 270</ref> Black metal varies considerably in style and production quality, although most bands emphasize shrieked and growled vocals, highly distorted guitars frequently played with rapid [[tremolo picking]], a "dark" atmosphere<ref name="Genre—Death Metal/Black Metal"/> and intentionally [[lo-fi]] production, with ambient noise and background hiss.<ref>Jurek, Thom. [http://wm06.allmusic.com/cg/amg.dll?p=amg&sql=10:jxfwxq8rldfe "Striborg: ''Nefaria''"]. Allmusic. Retrieved on November 15, 2007</ref> Satanic themes are common in black metal, though many bands take inspiration from ancient [[paganism]], promoting a return to pre-Christian values.<ref>Moynihan, Søderlind (1998), p. 212</ref> Numerous black metal bands also "experiment with sounds from all possible forms of metal, folk, classical music, electronica and avant-garde."<ref name="VS"/> [[Darkthrone]] drummer [[Fenriz]] explains, "It had something to do with production, lyrics, the way they dressed and a commitment to making ugly, raw, grim stuff. There wasn't a generic sound."<ref name="Campion">Campion, Chris. [http://observer.guardian.co.uk/omm/story/0,,1415240,00.html#article_continue "In the Face of Death"]. ''The Observer'' (UK), February 20, 2005. Retrieved on April 4, 2007.</ref>

By 1990, Mayhem was regularly wearing [[corpsepaint]]; many other black metal acts also adopted the look. Bathory inspired the [[Viking metal]] and [[folk metal]] movements and [[Immortal (band)|Immortal]] brought blast beats to the fore. Some bands in the Scandinavian black metal scene became associated with considerable violence in the early 1990s,<ref>Christe (2003), p. 276</ref> with Mayhem and Burzum linked to church burnings. Growing commercial hype around death metal generated a backlash; beginning in Norway, much of the Scandinavian metal underground shifted to support a black metal scene that resisted being co-opted by the commercial metal industry.<ref>Moynihan, Søderlind (1998), pp. 31–32</ref> According to [[Gorgoroth (band)|Gorgoroth]] vocalist [[Gaahl]], "Black Metal was never meant to reach an audience.... [We] had a common enemy which was, of course, Christianity, socialism and everything that democracy stands for."<ref name="Campion"/>
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By 1992, black metal scenes had begun to emerge in areas outside Scandinavia, including Germany, France, and Poland.<ref>Moynihan, Søderlind (1998), pp. 271, 321, 326</ref> The 1993 murder of Mayhem's [[Euronymous]] by Burzum's [[Varg Vikernes]] provoked intensive media coverage.<ref name="Campion"/> Around 1996, when many in the scene felt the genre was stagnating,<ref>Vikernes, Varg. "[http://www.burzum.org/eng/library/a_burzum_story06.shtml A Burzum Story: Part VI—The Music]". Burzum.org, July 2005; "[http://www.anus.com/metal/about/metal/black_metal_death.html Is Black Metal Dead?]". ''Dark Legions Archive''. Both retrieved on April 4, 2007.</ref> several key bands, including Burzum and Finland's [[Beherit (band)|Beherit]], moved toward an [[dark ambient|ambient]] style, while [[symphonic black metal]] was explored by Sweden's [[Tiamat (band)|Tiamat]] and Switzerland's [[Samael (band)|Samael]].<ref>[http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:11957 Genre—Symphonic Black Metal]. Allmusic. Retrieved on April 9, 2007.</ref> In the late 1990s and early 2000s, Norway's [[Dimmu Borgir]] brought black metal closer to the mainstream,<ref>Tepedelen, Adam. [http://www.rollingstone.com/artists/dimmuborgir/articles/story/5935933/dimmu_borgirs_death_cult "Dimmu Borgir's 'Death Cult'"]. ''Rolling Stone'', November 7, 2003. Retrieved on September 10, 2007.</ref> as did [[Cradle of Filth]], which ''[[Metal Hammer]]'' calls England's most successful metal band since Iron Maiden.<ref>Bennett, J. [http://www.decibelmagazine.com/features/jun2007/dimmuborgir.aspx "Dimmu Borgir"]. ''Decibel'', June 2007. Retrieved on September 10, 2007.</ref> Critically lauded contemporary acts include Sweden's traditionalist [[Watain]],<ref>Begrand, Adrien. [http://www.popmatters.com/pm/music/reviews/42007/watain-sworn-to-the-dark/ "Watain: ''Sworn to the Dark''"]. ''PopMatters'', June 19, 2007; Harris, Chris, and Jon Wiederhorn. [http://www.mtv.com/news/articles/1550858/20070125/shadows_fall.jhtml "Metal File: Watain, Shadows Fall, Furze & More News That Rules"]. MTV.com, January 26, 2007. Both retrieved on September 10, 2007.</ref> France's more experimental [[Deathspell Omega]],<ref>Freeman, Phil. [http://www.villagevoice.com/music/0736,freeman,77696,22.html "Deathspell Omega's ''Fas—Ite, Maledicti, In Ignem Aeternum''"]. ''Village Voice'', September 4, 2007; Jurek, Thom. [http://wm05.allmusic.com/cg/amg.dll?p=amg&sql=10:fnfixzt5ldde "Deathspell Omega: ''Fas—Ite, Maledicti, In Ignem Aeternum''"]. Allmusic. Both retrieved on September 10, 2007</ref> and America's one-man [[Xasthur]].<ref>Stosuy, Brandon. [http://www.pitchforkmedia.com/article/record_review/38838-subliminal-genocide "Xasthur: ''Subliminal Genocide''"]. ''Pitchfork'', October 10, 2006; Rivadavia, Eduardo. [http://wm05.allmusic.com/cg/amg.dll?p=amg&sql=10:acfwxqedldae "Xasthur: ''Subliminal Genocide''"]. Allmusic. Both retrieved on September 10, 2007</ref>

==== Power metal ====
[[Image:Hammerfall group.jpg|thumb|160px| Swedish power metal band [[HammerFall]] after a concert in Milano, Italy, in 2005]]
During the late 1980s, the [[power metal]] scene came together largely in reaction to the harshness of death and black metal.<ref name="Genre - Power Metal">"[http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:11959 Genre - Power Metal]". [[Allmusic]]. Retrieved on March 20, 2007.</ref> Though a relatively underground style in North America, it enjoys wide popularity in Europe, Japan, and South America. Power metal focuses on upbeat, epic melodies and themes that "appeal to the listener's sense of valor and loveliness."<ref>Christe (2003), p. 372</ref> The prototype for the sound was established in the mid- to late 1980s by Germany's [[Helloween]], which combined the power riffs, melodic approach, and high-pitched, "clean" singing style of bands like Judas Priest and Iron Maiden with thrash's speed and energy, "crystalliz[ing] the sonic ingredients of what is now known as power metal."<ref>"[http://www.allmusic.com/cg/amg.dll?p=amg&sql=11:difuxqe5ld0e~T1 Helloween - Biography]". [[Allmusic]]. Retrieved on April 8, 2007.</ref> New York's [[Manowar (band)|Manowar]] and [[Virgin Steele]] were pioneering American bands. [[Yngwie J. Malmsteen]]'s ''[[Rising Force]]'' (1984) was crucial in popularizing the ultrafast electric guitar style known as "[[shred guitar|shredding]]" as well as the merger of metal with [[neo-classical metal|classical music elements]], developments that have strongly influenced power metal.
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Traditional power metal bands like Sweden's [[HammerFall]], England's [[DragonForce]], and Florida's [[Iced Earth]] have a sound clearly indebted to the classic NWOBHM style.<ref>See, e.g., Reesman, Bryan. [http://wc02.allmusic.com/cg/amg.dll?p=amg&sql=10:gbfpxquhld0e "HammerFall: ''Glory to the Brave''"]. Allmusic; Henderson, Alex. [http://wc02.allmusic.com/cg/amg.dll?p=amg&sql=10:wnfrxquald6e "DragonForce: ''Sonic Firestorm''"]. Allmusic. Both retrieved on November 11, 2007</ref> Many power metal bands such as Florida's [[Kamelot]], Finland's [[Nightwish]], Italy's [[Rhapsody of Fire]], and Russia's [[Catharsis (Russian band)|Catharsis]] feature a keyboard-based [[Symphonic metal#Symphonic power metal|"symphonic" sound]], sometimes employing orchestras and opera singers. Power metal has built a strong fanbase in Japan and South America, where bands like Brazil's [[Angra (band)|Angra]] and Argentina's [[Rata Blanca]] are popular.

Closely related to power metal is [[progressive metal]], which adopts the complex compositional approach of bands like [[Rush (band)|Rush]] and [[King Crimson]]. This style emerged in the United States in the early and mid-1980s, with innovators such as [[Queensrÿche]], [[Fates Warning]], and [[Dream Theater]]. The mix of the progressive and power metal sounds is typified by New Jersey's [[Symphony X]], whose guitarist [[Michael Romeo]] is among the most recognized of latter-day shredders.<ref name="Genre - Progressive Metal">"[http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:2952 Genre - Progressive Metal]". [[Allmusic]]. Retrieved on March 20, 2007.</ref>

==== Doom and gothic metal ====
Emerging in the mid-1980s with such bands as California's [[Saint Vitus (band)|Saint Vitus]], Maryland's [[The Obsessed]], Chicago's [[Trouble (band)|Trouble]], and Sweden's [[Candlemass]], the [[doom metal]] movement rejected other metal styles' emphasis on speed, slowing its music to a crawl. Doom metal traces its roots to the lyrical themes and musical approach of early Black Sabbath<ref>Christe (2003), p. 345</ref> and Sabbath contemporaries such as [[Blue Cheer]], [[Pentagram (band)|Pentagram]], and [[Black Widow (band)|Black Widow]].<ref name="DoomM">"[http://www.doom-metal.com/history.html The History of Doom metal]". doom-metal.com. Retrieved on March 21, 2007.</ref> [[The Melvins]] have also been a significant influence on doom metal and a number of its subgenres.<ref>Begrand, Adrien. "[http://www.popmatters.com/columns/begrand/060215.shtml Blood and Thunder: The Profits of Doom]". February 15, 2006. PopMatters.com. Retrieved on April 8, 2007.</ref> Doom emphasizes melody, melancholy tempos, and a sepulchral mood relative to many other varieties of metal.<ref name="NYT1">Wray, John. "[http://www.nytimes.com/2006/05/28/magazine/28artmetal.html?ei=5090&en=68f0bcd99797d7a3&ex=1306468800&partner=rssuserland&emc=rss&pagewanted=all Heady Metal]". ''New York Times'', May 28, 2006. Retrieved on March 21, 2007.</ref>

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The 1991 release of ''[[Forest of Equilibrium]]'', the debut album by UK band [[Cathedral (band)|Cathedral]], helped spark a new wave of doom metal. During the same period, the doom-death fusion style of British bands [[Paradise Lost (band)|Paradise Lost]], [[My Dying Bride]], and [[Anathema (band)|Anathema]] gave rise to European [[gothic metal]],<ref>
Sharpe-Young (2007), pp. 246, 275; see also Stéphane Leguay, "Metal Gothique" in ''Carnets Noirs'', éditions E-dite, 3e édition, 2006, ISBN 2-84608-176-X</ref> with its signature dual-vocalist arrangements, exemplified by Norway's [[Theatre of Tragedy]] and [[Tristania (band)|Tristania]]. New York's [[Type O Negative]] introduced an American take on the style.<ref>Sharpe-Young (2007), p. 275</ref> Led by the Swedish band [[Therion (band)|Therion]]'s incorporation of classical elements, gothic metal in turn spawned a [[symphonic metal]] movement including Australia's [[Virgin Black]], Finland's [[Nightwish]], and the Netherlands' [[Within Temptation]] and [[After Forever]].

In the United States, [[sludge metal]], mixing doom and hardcore, emerged in the late 1980s—[[Eyehategod]] and [[Crowbar (US band)|Crowbar]] were leaders in a [[Music of New Orleans#Metal|major Louisiana sludge scene]]. Early in the next decade, California's [[Kyuss]] and [[Sleep (band)|Sleep]], inspired by the earlier doom metal bands, spearheaded the rise of [[stoner metal]],<ref>Christe (2003), p. 347</ref> while Seattle's [[Earth (band)|Earth]] helped develop the [[drone metal]] subgenre.<ref>Jackowiak, Jason. "[http://www.splendidezine.com/review.html?reviewid=1125311580560974 Hex: Or Printing in the Infernal Method]". Splendid Magazine, September, 2005. Retrieved on March 21, 2007.</ref> The late 1990s saw new bands form such as the Los Angeles–based [[Goatsnake]], with a classic stoner/doom sound, and [[Sunn O)))]], which crosses lines between doom, drone, and [[dark ambient]] metal—the ''New York Times'' has compared their sound to an "Indian raga in the middle of an earthquake".<ref name="NYT1"/>

=== New fusions: 1990s and early 2000s ===
:''For more details on this topic, see [[Alternative metal]] and [[Nu metal]]''
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The era of metal's mainstream dominance in North America came to an end in the early 1990s with the emergence of [[Nirvana (band)|Nirvana]] and other [[Grunge music|grunge]] bands, signaling the popular breakthrough of [[alternative rock]].<ref>Christe (2003), pp. 304–6; Weinstein (1991), p. 278</ref> Grunge acts were influenced by the heavy metal sound, but rejected the excesses of the more popular metal bands, such as their "flashy and virtuosic solos" and "appearance-driven" [[MTV]] orientation.<ref name="Covach"/>

Glam metal fell out of favor due not only to the success of grunge,<ref>Christe (2003), p. 231</ref> but also because of the growing popularity of the more aggressive sound typified by Metallica and the post-thrash [[groove metal]] of [[Pantera]] and [[White Zombie (band)|White Zombie]].<ref>Birchmeier, Jason. "[http://www.allmusic.com/cg/amg.dll?p=amg&sql=11:6qktk6rx9krw~T1 Pantera]". Allmusic.com. Retrieved on March 19, 2007.</ref> A few new, unambiguously metal bands had commercial success during the first half of the decade—Pantera's ''[[Far Beyond Driven]]'' topped the ''Billboard'' chart in 1994—but, "In the dull eyes of the mainstream, metal was dead."<ref>Christe (2003), p. 305</ref> Some bands tried to adapt to the new musical landscape. Metallica revamped its image: the band members cut their hair and, in 1996, headlined the alternative musical festival [[Lollapalooza]] founded by Jane's Addiction singer [[Perry Farrell]]. While this prompted a backlash among some long-time fans,<ref>Christe (2003), p. 312</ref> Metallica remained one of the most successful bands in the world into the new century.<ref>Christe (2003), p. 322</ref>
[[Image:Staley05.jpg|left|thumb|160px|[[Layne Staley]] of [[Alice in Chains]], one of the most popular acts identified with alternative metal, performing in 1992]]
Like Jane's Addiction, many of the most popular early 1990s groups with roots in heavy metal fall under the umbrella term "alternative metal."<ref name="alternativemetal">{{cite web|title=Genre—Alternative Metal|author=|publisher=[[Allmusic]]|date=|url=http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:2697|accessdate=2007-03-26}}</ref> The label was applied to a wide spectrum of acts that fused metal with different styles, not all associated with alternative rock. Acts labeled alternative metal included the Seattle grunge scene's [[Alice in Chains]] and groups drawing on multiple styles: [[Faith No More]] combined their alternative rock sound with punk, [[funk]], metal, and [[hip hop music|hip hop]]; [[Primus (band)|Primus]] joined elements of funk, punk, [[thrash metal]], and [[experimental music]]. [[Tool (band)|Tool]] mixed metal and [[progressive rock]]; [[Ministry (band)|Ministry]] began incorporating metal into its [[industrial music|industrial sound]]; and [[Marilyn Manson (band)|Marilyn Manson]] went down a similar route, while also employing shock effects of the sort popularized by Alice Cooper. Alternative metal artists, though they did not represent a cohesive scene, were united by their willingness to experiment with the metal genre and their rejection of glam metal aesthetics (with the stagecraft of Marilyn Manson and White Zombie—also identified with alt-metal—significant, if partial, exceptions).<ref name="alternativemetal"/> Alternative metal's mix of styles and sounds represented "the colorful results of metal opening up to face the outside world."<ref>Christe (2003), p. 224</ref>

In the mid- and late 1990s came a new wave of U.S. metal groups inspired by the alternative metal bands and their mix of genres.<ref>Christe (2003), pp. 324–25</ref> Dubbed "nu metal", bands such as [[P.O.D.]], [[Korn]], [[Papa Roach]], [[Limp Bizkit]], [[Flaw]], [[Slipknot (band)|Slipknot]], and [[Linkin Park]] incorporated elements ranging from death metal to hip hop, often including [[DJ]]s and [[Rapping|rap]]-style vocals. The mix demonstrated that "pancultural metal could pay off."<ref>Christe (2003), p. 329</ref> Nu metal gained mainstream success through heavy [[MTV]] rotation and Ozzy Osbourne's 1996 introduction of [[Ozzfest]], which led the media to talk of a resurgence of heavy metal.<ref>Christe (2003), p. 324</ref> That year, Korn released ''[[Life Is Peachy]]'', the first nu metal album to reach the top 10; two years later, the band's ''[[Follow the Leader (Korn album)|Follow the Leader]]'' hit number 1. In 1999, ''Billboard'' noted that there were more than 500 specialty metal radio shows in the U.S., nearly three times as many as ten years before.<ref>Christe (2003), p. 344</ref> While nu metal was widely popular early in the 2000s, traditional metal fans did not fully embrace the style.<ref>Christe (2003), p. 328</ref> By early 2003, the movement had clearly passed its peak, though several nu metal acts, as well as bands with related styles, such as [[System of a Down]], retained substantial followings.<ref>{{cite web | last = D'angelo | first = Joe | title=Nu Metal Meltdown | publisher = MTV.com | date=2003-01-24 | url=http://www.mtv.com/bands/m/metal_meltdown/news_feature_030124/index.jhtml | accessdate=2007-03-28}}</ref>

=== Recent trends: mid–late 2000s ===
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{{listen|filename=Trivium Pull Harder on the Strings of your Martyr.ogg|title="Pull Harder on the Strings of Your Martyr" |description="Pull Harder on the Strings of Your Martyr" from [[Trivium (band)|Trivium]]'s metalcore album ''[[Ascendancy (album)|Ascendancy]]'' (2005)| format=[[Ogg]]}}{{sample box end}}
[[Metalcore]], an originally American hybrid of thrash metal and [[hardcore punk]], emerged as a commercial force in the mid-2000s. It is rooted in the [[crossover thrash]] style developed two decades earlier by bands such as [[Suicidal Tendencies]], [[Dirty Rotten Imbeciles]], and [[Stormtroopers of Death]].<ref>Christe (2003), p. 184</ref> Through the 1990s, metalcore was mostly an underground phenomenon. By 2004, melodic metalcore—influenced as well by [[melodic death metal]]—was popular enough that [[Killswitch Engage]]'s ''[[The End of Heartache]]'' and [[Shadows Fall]]'s ''[[The War Within (album)|The War Within]]'' debuted at numbers 21 and 20, respectively, on the ''Billboard'' album chart.<ref>{{cite web|title=Killswitch Engage|author=|publisher=''[[Roadrunner Records]]''|date=|url=http://www.roadrunnerrecords.com/artists/KillswitchEngage/bio.aspx/| accessdate = 2007-03-17}} {{cite web|title=Shadows Fall|author=|publisher=''[[Atlantic Records]]''|date=|url=http://www.atlanticrecords.com/shadowsfall/about/| accessdate = 2007-03-17}}</ref> [[Bullet for My Valentine]], from Wales, broke into the top 5 in both the U.S. and British charts with ''[[Scream Aim Fire]]'' (2008). In recent years, metalcore bands have received prominent slots at Ozzfest and the [[Download Festival]]. [[Lamb of God (band)|Lamb of God]], with a related blend of metal styles, hit the ''Billboard'' top 10 in 2006 with ''[[Sacrament (album)|Sacrament]]''. The success of these bands and others such as [[Trivium (band)|Trivium]], which has released both metalcore and straight-ahead thrash albums, and [[Mastodon (band)|Mastodon]], which plays in a progressive/sludge style, has inspired claims of a metal revival in the United States, dubbed by some critics the "[[New Wave of American Heavy Metal]]."<ref>Sharpe-Young, Garry, ''New Wave of American Heavy Metal'' [http://books.google.com/books?id=uIIf03bGyAAC&pg=PP10&dq=nwoahm&ei=a7ohSNGYCrW2iQGP95nFDQ&sig=yhEpvA_dhNF6I5YwMJACJGRA3XY#PPP10,M1 (link)]. {{cite web |author=Edward, James |title=The Ghosts of Glam Metal Past |url=http://www.lotfp.com/content.php?editorialid=64 |publisher=Lamentations of the Flame Princess|accessdate=2008-04-27}} {{cite web| url = http://www.popmatters.com/columns/begrand/051014.shtml|publisher = Popmatters|title = Blood and Thunder: Regeneration|author =Begrand, Adrien| accessdate = 2008-05-14}}</ref>

[[Image:Masters of Rock 2007 - Children of Bodom - 08.jpg|thumb|[[Children of Bodom]], performing at the 2007 [[Masters of Rock (festival)|Masters of Rock]] festival]]
The term "retro-metal" has been applied to such bands as England's [[The Darkness]]<ref name="DAMG">[http://www.allmusic.com/cg/amg.dll?p=amg&token=&sql=10:dcfpxqwald0e The Darkness]. Allmusic. Retrieved on June 11, 2007.</ref> and Australia's [[Wolfmother]].<ref name="WRS">[http://www.rollingstone.com/artists/wolfmother Wolfmother]. ''Rolling Stone'', April 18, 2006. Retrieved on March 31, 2007.</ref> The Darkness's ''[[Permission to Land]]'' (2003), described as an "eerily realistic simulation of '80s metal and '70s glam,"<ref name="DAMG"/> topped the UK charts, going quintuple platinum. ''[[One Way Ticket To Hell And Back]]'' (2005) reached number 11.<ref>{{cite web| url =http://www.chartstats.com/artistinfo.php?id=52|publisher = Chart Stats|title = Chart Stats: The Darkness| accessdate = 2008-06-17}}</ref> Wolfmother's [[Wolfmother (album)|self-titled 2005 debut album]] had "Deep Purple-ish organs," "Jimmy Page-worthy chordal riffing," and lead singer [[Andrew Stockdale]] howling "notes that Robert Plant can't reach anymore."<ref name="WRS"/> "[[Woman (Wolfmother song)|Woman]]," a track from the album, won for [[Grammy Award for Best Hard Rock Performance|Best Hard Rock Performance]] at the [[Nominees for Grammy Awards of 2007#Rock|2007 Grammy Awards]]. Slayer's "[[Eyes of the Insane]]" won for [[Grammy Award for Best Metal Performance|Best Metal Performance]] in 2007; their "Final Six" won the same award in 2008.<ref>{{cite web|url=http://www.grammy.com/GRAMMY_Awards/Winners/Results.aspx|publisher = Grammy.com|title = Grammy Award Winners| accessdate = 2008-09-25}}</ref>

In continental Europe, especially Germany and Scandinavia, metal continues to be broadly popular. Well-established British acts such as Judas Priest and Iron Maiden continue to have chart success on the continent, as do a range of local groups. In Germany, Western Europe's largest music market, several continental metal bands placed multiple albums in the top 20 of the charts between 2003 and 2008, including Finnish melodic death metal band [[Children of Bodom]], Norwegian symphonic extreme metal act [[Dimmu Borgir]], and two power metal groups, Germany's [[Blind Guardian]] and Sweden's [[HammerFall]].<ref name="GerChart">{{cite web| url =http://www.charts-surfer.de/musiksearch.php|publisher = Charts-Surfer|title = Musik Charts: Suchergebnis| accessdate = 2008-06-17}} (In German).</ref> The Swedish melodic death metal act [[In Flames]] took both ''[[Come Clarity]]'' (2006) and ''[[A Sense of Purpose]]'' (2008) to number 6 in Germany;<ref name="GerChart"/> each album topped the Swedish charts.<ref>{{cite web| url =http://swedishcharts.com/search.asp?cat=a&search=In+Flames|publisher = swedishcharts.com|title = Swedish Charts Portal: In Flames| accessdate = 2008-06-17}} (In Swedish).</ref>

== See also ==
{{portal|Heavy metal}}
*[[List of heavy metal bands]]
*[[List of heavy metal genres]]
*[[List of metal festivals]]
*[[Timeline of heavy metal]]

== References ==
{{reflist|3}}

== Sources ==
*[[Denis Arnold|Arnold, Denis]] (1983). "Consecutive Intervals," in ''[[The Oxford Companion to Music|The New Oxford Companion to Music]]'', Volume 1: A-J. Oxford University Press. ISBN 0-19-311316-3
*Arnett, Jeffrey Jensen (1996). ''Metalheads: Heavy Metal Music and Adolescent Alienation''. Westview Press. ISBN 0-8133-2813-6
*Berelian, Essi (2005). '' Rough Guide to Heavy Metal''. Rough Guides. Foreword by Bruce Dickinson of Iron Maiden. ISBN 1-84353-415-0
*Berry, Mick and Jason Gianni (2003). ''The Drummer's Bible: How to Play Every Drum Style from Afro-Cuban to Zydeco.'' See Sharp Press. ISBN 1-884365-32-9
*Blake, Andrew (1997). ''The Land Without Music: Music, Culture and Society in Twentieth-century Britain''. Manchester University Press. ISBN 0-7190-4299-2
*Carson, Annette (2001). ''Jeff Beck: Crazy Fingers''. Backbeat Books. ISBN 0-87930-632-7
*Charlton, Katherine (2003). ''Rock Music Styles: A History''. McGraw Hill. ISBN 0-07-249555-3
*[[Ian Christe|Christe, Ian]] (2003). ''Sound of the Beast: The Complete Headbanging History of Heavy Metal''. HarperCollins. ISBN 0-380-81127-8
*[[Robert Christgau|Christgau, Robert]] (1981). "''[[Master of Reality]]'' (1971) [review]," in ''Christgau's Record Guide''. Ticknor & Fields. ISBN 0-89919-026-X
*Cook, Nicholas, and Nicola Dibben (2001). "Musicological Approaches to Emotion," in ''Music and Emotion''. Oxford University Press. ISBN 0-1926-3188-8
*Du Noyer, Paul (ed.) (2003). ''The Illustrated Encyclopedia of Music''. Flame Tree. ISBN 1-9040-4170-1
*Ewing, Charles Patrick, and Joseph T. McCann (2006). ''Minds on Trial: Great Cases in Law and Psychology''. Oxford University Press. ISBN 0-1951-8176-X
*Kennedy, Michael (1985). ''The Oxford Dictionary of Music''. Oxford University Press. ISBN 0-1931-1333-3
*McCleary, John Bassett (2004). ''The Hippie Dictionary: A Cultural Encyclopedia of the 1960s and 1970s''. Ten Speed Press. ISBN 1-58008-547-4
*McMichael, Joe (2004). ''The Who Concert File''. Omnibus Press. ISBN 1-84449-009-2
*Moynihan, Michael, and Dirik Søderlind (1998). ''Lords of Chaos'' (2nd ed.). Feral House. ISBN 0-922915-94-6
*Leguay, Stéphane (2006). "Metal Gothique," in ''Carnets Noirs'', éditions E-dite, 3rd edition, ISBN 2-84608-176-X
*O'Neil, Robert M. (2001). ''The First Amendment and Civil Liability''. Indiana University Press. ISBN 0-253-34033-0
*Pareles, Jon, and Patricia Romanowski (eds.) (1983). ''The Rolling Stone Encyclopedia of Rock & Roll''. Rolling Stone Press/Summit Books. ISBN 0-671-44071-3
*[[Stanley Sadie|Sadie, Stanley]] (1980). "Consecutive Fifth, Consecutive Octaves," in ''[[The New Grove Dictionary of Music and Musicians]]'' (1st ed.). MacMillan. ISBN 0-333-23111-2
*Schonbrun, Marc (2006). ''The Everything Guitar Chords Book''. Adams Media. ISBN 1-59337-529-8
*Sharpe-Young, Garry (2007). ''Metal: The Definitive Guide''. Jawbone Press. ISBN 9781906002015
*Thompson, Graham (2007). ''American Culture in the 1980s''. Edinburgh University Press. ISBN 0-7486-1910-0
*[[Robert Walser (musicologist)|Walser, Robert]] (1993). ''Running with the Devil: Power, Gender, and Madness in Heavy Metal Music''. Wesleyan University Press. ISBN 0-8195-6260-2
*Van Zoonen, Liesbet (2005). ''Entertaining The Citizen: When Politics and Popular Culture Converge''. Rowan & Littlefield. ISBN 0-7425-2906-1
*Weinstein, Deena (1991). ''Heavy Metal: A Cultural Sociology''. Lexington. ISBN 0-669-21837-5. Revised edition: (2000). ''Heavy Metal: The Music and its Culture''. Da Capo. ISBN 0-306-80970-2
*Wilkerson, Mark Ian (2006). ''Amazing Journey: The Life of Pete Townshend''. Bad News Press. ISBN 1-4116-7700-5

== External links ==
{{commonscat|Metal (Music)}}
*[http://www.allmusic.com/cg/amg.dll?p=amg&sql=77:655 All Music Guide] entry for heavy metal
{{rock}}
{{featured article}}

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