Haydn’s creative imagination was stimulated by eminent Italian composers such as Porpora and Scarlatti and by his contemporary C.P.E. Bach, whose piano sonatas Haydn had performed. Through Georg Wagenseil, an important figure in Viennese music for the piano, he also absorbed a new sense of musical form. Together, these influences generated Haydn’s own individual language, as shown in the Sonata in C major with its elegance and wit. The Andante con variazioni in F minor shows further refinement and development in the composer’s command of variation form. Alexandra Ivanova performs on fortepianos from Haydn’s era.