"Man of La Mancha" is a musical with the 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's 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.
The original 1965 Broadway production ran for 2,328 performances and won five Tony Awards, including Best Musical. The musical has been revived four times on Broadway, becoming one of the most enduring works of musical theatre.