Donald Macleod explores Haydn's Catholic faith, including how he was nearly castrated as a choirboy. The young composer's sense of mischief curtailed his career as a young singer at St Stephen's Cathedral in Vienna, when he cut off another boy's pigtail in a prank. His later career, though, demonstrated devout faith, with powerful religious drama conveyed in many works, including a depiction of the earthquake which followed Christ's death on the cross.