Peter Heise (11 February 1830 - 12 September 1879) was a Danish composer, best known for the opera Drot og Marsk (King and Marshal). Heise's parents tried to press him into becoming a lawyer, but he scored highly in music at school, so he changed direction. He began writing songs at the age of 19. As a young man he collected several hundred folk songs directly from ordinary people. He used these tunes in Tornerose (Sleeping Beauty) andBergliot (A Danish historical romance). He studied under Niels Wilhelm Gade, who was a major influence on his style. From 1857 to 1865 he was a teacher and organist at Sorø Academy. He did a setting of Hans Christian Andersen's poem Jylland mellem tvende Have (Jutland between two seas) in 1860.