Legs Diamond is a musical with a book by Harvey Fierstein and Charles Suppon based on the Warner Brothers film The Rise and Fall of Legs Diamond (1960), with a screenplay by Joseph Landon. The music and lyrics are by Peter Allen, who starred as the title character in the Broadway production. The Almost Totally Fictitious Musical History of Legs Diamond follows the travails of its title character, a Depression-era mobster who wants to break into show business.