Elgar wrote five marches, collectively known as Pomp & Circumstance. They were written between 1901 and 1907, and published as his Op 39, though the 5th was not published until 1930. The first is the famous "Last Night of the Proms" piece, whose big tune was set to words 'Land of Hope and Glory'. The fourth suffered the same fate, but only during World War 2 when the tune was often sung to patriotic words by A P Herbert "All men shall be free".