Piano Sonata No. 7 (Mozart)

{{short description|Sonata by Wolfgang Amadeus Mozart}}

{{Infobox musical composition

| name = Piano Sonata in C major

| subtitle = No. 7

| composer = W. A. Mozart

| image = Mozart- Coda- Sonata in C Major, K. 309, I.png

| image_upright = 1.3

| alt =

| caption = Coda {{audio|Mozart- Coda- Sonata in C Major, K. 309, I.mid|Play}}.Benward & Saker (2009). Music in Theory and Practice: Volume II, p.151. Eighth Edition. {{ISBN|978-0-07-310188-0}}.

| key = C major

| catalogue = K. 309 (284b)

| style = Classical period

| composed = {{start date|1777}}

| dedication =

| published =

| movements = Three (Allegro con spirito, Andante un poco adagio, Rondo, Allegretto grazioso)

| scoring =

}}

Wolfgang Amadeus Mozart's Piano Sonata No. 7 in C major, K. 309 (284b) (1777) is a piano sonata in three movements:

{{ordered list|list_style_type=upper-roman

|Allegro con spirito

|Andante un poco adagio (F major)

|Rondo (allegretto grazioso)}}

A typical performance takes about 16 minutes.{{fact|date=February 2015}}

The work was composed during a journey to Mannheim and Paris in 1777-78. In a letter to his father dated October 24 1777, Mozart describes a concert where he played "a magnificent sonata in C major with a closing rondo, my own invention",Mersmann, Hans, Letters of Wolfgang Amadeus Mozart, p 41, Dover (1972), {{ISBN|0-486-22859-2}} suggesting that the sonata was completed by October 1777. The andante movement is a "portrait" of his pupil Rose Cannabich, 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}}