Wolfgang Amadeus Mozart's Piano Sonata No. 15 in F major, K. 533/494 was finished on January 3, 1788). Its three movements typically take about 23 minutes to perform.
The Rondo was originally a stand-alone piece composed by Mozart in 1786 (Rondo No. 2, K. 494 in the Köchel catalogue). In 1788, Mozart wrote the first two movements of K. 533 and incorporated a revised version of K. 494 as the finale, having lengthened it in order to provide a more substantial counterpart to the other two movements.