Leonard Barrett is a jazz singer, which meant he brought new shadings to the familiar songs of Man of La Mancha, an old warhorse of a musical, soaring on the title song and giving "The Impossible Dream" just enough originality to make it unsentimental and fresh. Barely recognizable as Don Quixote in his thick, old-man makeup, yet masterful, powerful and tender, Barrett immersed himself completely in the role, dominating the stage whenever he was on it.