(Franz) Joseph Haydn (/ˈdʒoʊzəf ˈhaɪdən/; German: [ˈjoːzɛf ˈhaɪdən]; 31 March 1732 – 31 May 1809) was an Austrian composer of the Classical period. He was instrumental in the development of chamber music such as the piano trio and his contributions to musical form have earned him the epithets "Father of the Symphony" and "Father of the String Quartet".
Haydn spent much of his career as a court musician for the wealthy Esterházy family at their remote estate. Until the later part of his life, this isolated him from other composers and trends in music so that he was, as he put it, "forced to become original". Yet his music circulated widely and for much of his career he was the most celebrated composer in Europe.
He was a friend and mentor of Mozart, a teacher of Beethoven, and the older brother of composer Michael Haydn.
Joseph Haydn was born in Rohrau, Austria, a village that at that time stood on the border with Hungary. His father was Mathias Haydn, a wheelwright who also served as "Marktrichter", an office akin to village mayor. Haydn's mother Maria, née Koller, had previously worked as a cook in the palace of Count Harrach, the presiding aristocrat of Rohrau. Neither parent could read music; however, Mathias was an enthusiastic folk musician, who during the journeyman period of his career had taught himself to play the harp. According to Haydn's later reminiscences, his childhood family was extremely musical, and frequently sang together and with their neighbours.