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").
Violin Sonata No. 1 in D major (Schubert)
Sonatina in D major is a music composition by the German composer Franz Schubert written for the violin and piano. Schubert wrote the piece in 1816 along with his two other violin and piano sonatas, together forming the sonatinas Op. 137.