Man of La Mancha is a 1964 musical with a book by Dale Wasserman, lyrics by Joe Darion and music by Mitch Leigh. It is adapted from Wasserman's non-musical 1959 teleplay I, Don Quixote, which was in turn inspired by Miguel de Cervantes and his seventeenth-century masterpiece Don Quixote. It tells the story of the "mad" knight, Don Quixote, as a play within a play, performed by Cervantes and his fellow prisoners as he awaits a hearing with the Spanish Inquisition.