''Music in Theory and Practice: Volume II'', p.151. Eighth Edition. ISBN 978-0-07-310188-0.]]
Wolfgang Amadeus Mozart's '''Piano Sonata No. 7 in C major''', K 309 (284b) (1777) is a piano sonata in three movements:
#''Allegro con spirito''
#''Andante un poco adagio''
#''Rondo (allegretto grazioso)''
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 Rose Cannabich (his pupil), the 13-year-old daughter of the Mannheim Kapellmeister Christian Cannabich.Marshall, Robert, ''Eighteenth-century keyboard music'', p. 289-290, Routledge, New York (2003) ISBN 0-415-96642-6 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".Sadie, Stanley, Mozart: The Early Years 1756-1781, p 442-443, Oxford University (2006), ISBN 978-0-19-816529-3