Fantasy in D minor KV 397 (385g)
The Fantasy in D minor KV 397 (385g) by Wolfgang Amadeus Mozart was written, according to various sources, either in 1782 or 1785. The first edition, which only appeared posthumously in 1804, is missing the end. It has not yet been possible to clarify whether Mozart's composition was not completed or whether the ending was lost. Most likely the last 10 bars were added by August Eberhard Müller, but it cannot be ruled out that the bars could have come from Mozart himself (R. Steglich in the Mozart Yearbook 1953, p. 140). The composition was possibly created for an act of mourning in the Masonic lodge to which Mozart belonged at the time.
background
The following structure can be recognized from the tempos: Andante - Adagio - Presto - Tempo primo - Presto - Allegretto. The Presto sections only last one measure and consist primarily of a long run. Up to the Allegretto, the imagination is in 
. From the Allegretto, the piano work is in 2/4 time. The Alberti bass is a recurring accompaniment within the imagination and holds this work together. The andante is a kind of introduction, which is eleven bars long. The main feature are the triplets , which act like a veil. The main motif, which appears repeatedly from bar 12 within the slow sections, consists of a total of two bars and is varied within the work. The Allegretto section, which is in D major, forms a contrast in several respects: On the one hand, this section is in 2/4 time, whereby every odd beat is emphasized and thus proceeds "more quickly". Allegretto is a kind of " diminutive " of Allegro and means something like joyful . This tempo marking underlines the lively character of the last part. In the Allegretto section the piece breaks abruptly. It is believed that Franz Xaver Süßmayr added the last ten bars.