Crown Imperial is an orchestral march by the English composer William Walton. It was first performed at the coronation of King George VI in 1937, and substantially revised in 1953. Walton composed the march originally for performance at the coronation of King Edward VIII, which was scheduled for 12 May 1937. However, Edward abdicated in 1936. The coronation was held on the scheduled day, with Edward's brother George VI being crowned instead. Crown Imperial was also performed at the coronation of Queen Elizabeth II in 1953, along with another Coronation March. Crown Imperial is now one of the most popular of Walton's orchestral compositions. It was performed again as a recessional piece to the wedding of Prince William and Catherine Middleton on 29th April 2011.