Micrologus

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The Micrologus (Guidonis) de disciplina artis musicae (in German: Short treatise (Guidos) on the rules of musical art ) is one of the most important music-theoretical works of the Middle Ages , which was written as the main work of the Benedictine monk Guido of Arezzo around 1025.

Guido of Arezzo instructs Bishop Theodaldo of Arezzo on the monochord (12th century drawing from Codex Lat. 51 f ° 35v XIe Vienne)

The Micrologus is dedicated to Bishop Teodaldo of Arezzo . He covers the singing and teaching of Gregorian chant and discusses the possibilities of composing music for several voices .

content

The content is divided into the following sections:

  • preface
  • contents
  1. What does someone who wants to learn music have to do?
  2. What or what kind of grades are and how many?
  3. About their arrangement on the monochord
  4. In what sixfold way are the tones connected?
  5. From the octave and why there are only seven notes?
  6. About the division and their explanation
  7. About the relationship of tones according to four keys
  8. About other family relationships (of tones) and b and b
  9. About the similarity of tones, which is perfect only in the case of the octave
  10. Which tone prevails in the singing and why?
  11. About the division of the four keys into eight
  12. About the characteristics of the eight tones, and their range in terms of height and depth
  13. About the tropics and the influence of music
  14. About the well-composed or well-fitting symmetry of a melody
  15. About the multiplicity of tones and tone groups
  16. That everything can be singed that is spoken
  17. About diaphony, that is, about the rules of the organum
  18. A closer look at the aforementioned diaphony using examples
  19. How music was invented from the sound of hammers ( see also: Pythagoras in the forge )

literature

  • Emmanuela Kohlhaas: Music and Language in Gregorian Chant (= Archive for Musicology . Supplement 49). Steiner, Stuttgart 2001, ISBN 3-515-07876-2 , pp. 152–162: Chapter 3.3.4 - Guido von Arezzo (also dissertation. University of Bonn 2000. limited preview in Google book search).
  • Michael Hermesdorff: Micrologus Guidonis de disciplina artis musicae / Guido's short treatise on the rules of musical art . Grach, Trier 1876 ( archive.org ).