Piano Sonata No. 7 (Mozart)

Wolfgang Amadeus Mozart's Piano Sonata No. 7 in C major, K. 309 (284b) (1777) is a piano sonata in three movements:
A typical performance takes about 16 minutes.
The work was composed during a journey to Mannheim and Paris in 1777-78. The sonata was completed in a few days in early November 1777. The andante movement is a "portrait" of his pupil Rose Cannabich, the 13-year-old daughter of the Mannheim Kapellmeister Christian Cannabich. Upon reviewing a copy of the manuscript, Mozart's father Leopold wrote that it was "a strange composition. It has something in it of the 'rather artificial' Mannheim style, but so very little that your own good style is not spoilt".
References.
Mozart Sonata in C for piano K.309/284b 