Joseph Haydn was a terran composer from the country of Austria on Earth in the late 1700s. His compositions were known by the terran colonists of the Koprulu Sector even by the time of the Guild Wars. Haydn's works were the favorite of Kel-Morian Taskmaster Lumley, who forced some of the Terran Confederacy prisoners of war in KIC-36 to play Haydn's compositions in a string quartet for his amusement.