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 No. 28 (Beethoven)
Beethoven offered the sonata for publication in a letter to Breitkopf and Härtel on July 19, 1816, when it was still far from complete. Eventually it was sold to the local Viennese publisher Sigmond Anton Steiner, after its completion. It was published in January 1817, and would appear in public the following month after delays.