Piano Sonata no. 23 in F minor, op. 57, "Appassionata"

Ludwig van Beethoven's Piano Sonata No. 23 in F minor, Op. 57 (colloquially known as the Appassionata, meaning "passionate" in Italian) is among the three famous piano sonatas of his middle period (the others being the Waldstein, Op. 53 and Les Adieux, Op. 81a); it was composed during 1804 and 1805, and perhaps 1806, and Beethoven dedicated it to cellist and his friend, Count Franz Brunswick. The first edition was published in February 1807 in Vienna.