Octotune

Fantasia in D minor, K. 397

Mozart's Fantasia in D minor, K. 397, is an intermediate piece, Octotune grade 6 of 8: an improvised-sounding work of contrasts, from rippling arpeggios and a sighing Adagio to quick runs, ending in a bright Allegretto in D major.

Play it in Octotune

The opening, as the app engraves it: F3, A3, D4, A3, F4, D4, A3, F3

At a glance

ComposerWolfgang Amadeus Mozart (1756–1791)
DifficultyIntermediate: grade 6 of 8
KeyKey signature: 1 flat (B♭)
Time2/2
Tempo80 quarter-note beats a minute, as the app starts it (it can go slower)
Length305 measures, about 4:43
Handsboth hands
Right handD2 to F6
Left handA1 to F5

It reaches past the staff: see ledger lines explained.

Levels in the app

VersionGradeLevels
Fantasia in D minor, K. 3976 of 8Melody, Melody and bass, Full

Practice notes

Mozart wrote his Fantasia in D minor, K. 397, in Vienna in the early 1780s. A fantasia sounds like an improvisation: it changes mood and tempo freely instead of following a set form. Mozart left it unfinished; the closing measures most editions print were added after his death.

How it is built.

  • An opening of arpeggios. Both hands ripple through slow broken chords in triplets, D minor, then others, dark and quiet.
  • The Adagio. A sighing melody over soft repeated chords, interrupted by pauses and sudden runs.
  • Presto flourishes. Quick runs, like cadenzas, that break into the Adagio before it resumes.
  • The Allegretto. The key signature changes to two sharps and the music turns to D major: a bright, simple tune that ends the piece.

The tricky parts

  • Changes of tempo. Octotune follows the tempo changes as it plays; practice each section at its own pace first.
  • Accidentals. Many, throughout the D minor sections.
  • Quick runs. Practice them slowly, in groups, with a fixed fingering.
  • Quiet control. Much of it is soft; keep the arpeggios even.

Practice plan

  1. Learn it in sections: set the loop to one section at a time, hands separately in Wait for me.
  2. The runs slowly, at 40–50% speed.
  3. Join the sections, letting each have its own character.

Before you start: Octotune's path through Unit 11, and a few easier Mozart pieces, like the Minuet in F, K. 2. Its accidentals and range go well beyond the path.

Questions

Is Mozart's Fantasia in D minor hard?

It is an intermediate piece, Octotune grade 6 of 8. The slow sections are within reach, but the quick runs and the many changes of tempo and mood take control and patience.

Did Mozart finish the Fantasia in D minor?

Not quite. He left it unfinished, and the closing measures most editions print were added after his death, probably by the composer August Eberhard Müller.

Credits and license