Rondo in F

Most modern editions of Mozart’s keyboard sonatas consist of the same 18 three-movement sonatas. However, at least three early sonatas are lost; only their incipits have been preserved. The Sonata in F, KV 547a, which is closely related to the Violin Sonata in F, KV 547, only consists of 2 movements. In 1774–1775, Mozart composed a set of 6 sonatas, KV 279–284, which in the family were referred to as the “difficult sonatas”. All are in three movements and closely follow a model that Joseph Haydn had established with his so-called Esterházy sonatas, Hob. XVI:21–26. The next series of sonatas were published in groups of three (KV 309–311 and KV 330–332), while the sonatas composed from late 1783 onwards were written and published individually.