Opened on November 22, 1965. Closed June 26, 1971 after 2,328 performances — 5.6 years. 5 Tony Awards in 1966, including Best Musical Man of La Mancha is a 1965 musical with a book by Dale Wasserman, music by Mitch Leigh, and lyrics by Joe Darion. It is adapted from Wasserman's non-musical 1959 teleplay I, Don Quixote, which was in turn inspired by Miguel de Cervantes and his 17th-century novel 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. Wiki link