Related Information for Mitch LeighMitch Leigh (born January 30, 1928 in Brooklyn, New York) is an American writer of musical theatre and theatrical producer best known for the show Man Of La Mancha.Born Irwin Michnick and educated at Yale under Paul Hindemith, he began as a jazz musician and writing commercials for radio and television. In 1965 he teamed up with lyricist Joe Darion to write a musical based on Don Quixote. The resulting show, Man Of La Mancha opened on Broadway and ran for 2328 shows. read more