The first movement is generally playful and lively in character. It begins in the key of B-flat major and eventually cadences on the dominant, F major. The development section starts in F major and modulates through several keys before recapitulating on the tonic.
The second movement is marked “Andante cantabile” in the subdominant key of E-flat major. The movement opens with thirds in the right hand progressing to the more lyrical theme of the movement accompanied by flowing broken triads in the left hand. It soon modulates to B-flat major for a ‘minuet like’ section. After this, the movement begins to modulate back to E-flat major for a repeat of the exposition, however, after the first repeat, just as it seems to settle again in E-flat major, the development begins in the G minor. From G minor it modulates to F minor, to C minor, to A-flat major, to C-sharp minor and finally back to E-flat major at which point the recapitulation occurs. Throughout the second movement, chromaticism is present which occasionally evokes a slight sense of dissonance.
The third movement shows much similarity to the first by chord pattern and by music phrases. The first part starts simply but playfully. The theme is repeated but with the broken chords accompanying the melody. The mood slowly softens but a difficult melody is quickly established. It builds up and ends at a climax.
In the second part the first part is repeated until its course changes to a minor key. It then plays two phrases which will be repeated in different keys. The third part comes in quickly and unexpectedly. It comes to a section where the major and minor keys switch every few bars. It slowly comes back to the major key where it repeats the opening theme for the second time. It continues with phrases adapted from the first movement. Then comes a series of arpeggios which lead to a short pause preceding the final repeat of the first theme with accompaniment variations, ending the piece.
The first movement was performed at the Royal Albert Hall in 1969 by Frank Zappa’s The Mothers of Invention, accompanied by a “grotesque parody of the art of ballet dancing” performed by the band members. Though not as a direct result of this piece, Zappa was later banned from performing at this venue.Other pieces by Mozart: http://audiojungle.net/user/isakukageyama/portfolio?utf8=%E2%9C%93&term=mozart