Piano Sonata No. 10 (Mozart)

Piano Sonata in C major
No. 10
by W. A. Mozart
The young composer, a 1777 copy of a lost painting
Key	C major
Catalogue	K. 330 / 300h
Style	Classical period
Composed	1783 (1783)
Published	1784
Movements	Three (Allegro moderato, Andante cantabile, Allegretto)

Wolfgang Amadeus Mozart's Piano Sonata No. 10 in C major, K. 330 / 300h, is one of the three works in the cycle of piano sonatas K.330-332. The sonata was composed in 1783, when Mozart was twenty-seven years old. It was published, with the other two sonatas Artaria in 1784. A typical performance of this sonata lasts around twenty minutes.

The work is considered one of Mozart's most popular piano sonatas, and has been featured in classical music-related films, such as Sparky's Magic Piano. Mozart's autograph of the sonata is held in the Jagiellonian Library, Kraków.

The sonata is in three movements:

The first movement typically takes about five minutes to nine minutes to perform. The length of the movement depends largely on whether both repeats (the repeat of the exposition and the repeat of the development and recapitulation) are observed. The movement shows two clear major themes, which have been decorated by the use of ornamentation, as was typical of the time.

The movement is composed of an exposition, a development and a recapitulation.

The first subject is in tonic key of C major and modulates to the dominant, G major, for the exposition of the second subject. The development is more intense and contains wider modulations. In the recapitulation, the first subject is heard, again in C major. The music then modulates to G major, and then returns to C major for the recapitulation of the second subject in the tonic key.