Piano sonatas (Beethoven)
Ludwig van Beethoven wrote his 32 piano sonatas between 1795 and 1822. Although originally not intended to be a meaningful whole, as a set they compose one of the most important collections of works in the history of music. Hans von Bülow called them "The New Testament" of the piano literature (Johann Sebastian Bach's "The Well-Tempered Clavier" being "The Old Testament").
Piano Sonata (Martinů)
Bohuslav Martinů's Piano Sonata, H. 350 was written in Nice in the last months of 1954 for Rudolf Serkin, who premiered it in Düsseldorf in 1957 coupled with Ludwig van Beethoven's Sonata No. 29. The first performance in the Eastern Bloc took place in Brno later that year, by Eliška Nováková.