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 Sonatas Nos. 19 and 20 (Beethoven)
The Piano Sonata No. 19 in G minor, Op. 49, No. 1, and Piano Sonata No. 20 in G major, Op. 49, No. 2, are short sonatas (and are considered relatively simple sonatas by some pianists) by Ludwig van Beethoven, published in 1805 (although the works were actually composed a decade earlier in 1795–96). Both works are approximately eight minutes in length, and are split into two movements. These sonatas are referred to as the "Leichte Sonaten" to be given to his friends and students.