Franz Joseph Haydn (1732-1809) was an Austrian composer who was one of the most prolific and important composers of the Classical period. He made many pivotal contributions that helped establish classical music forms such as the symphony, string quartet, and piano trio. Haydn spent much of his career in the employ of the wealthy Esterhazy family, composing and performing music for them. He faced a difficult childhood but eventually gained recognition as a composer and spent time living in London late in his career. Haydn composed over 100 symphonies, 80 string quartets and many other works before his death.