Conversation so far:
What was Michael Bennett's earliest musical that he worked on?
Michael Bennett made his choreographic debut with A Joyful Noise (1966)
How did the 1960's hit do with Michael Bennett?
A Joyful Noise (1966) lasted only twelve performances, and in 1967 followed it with another failure, Henry, Sweet Henry (based on the Peter Sellers film The World of Henry Orient).

Question: What was one of his successes in 1960?
Self-contained rewrite: What was one of Michael Bennett 's successes in 1960?