Nine is a musical initiated by and with music and lyrics by Maury Yeston and a book by Arthur Kopit. It is based on the 1963 film 8½.

Arthur Lee Kopit was an American playwright. He was a two-time Pulitzer Prize finalist for Indians and Wings. He was also nominated for three Tony Awards: Best Play for Indians (1970) and Wings (1979), as well as Best Book of a Musical for Nine (1982). He won the Vernon Rice Award in 1962 for Oh Dad, Poor Dad, Mamma's Hung You in the Closet and I'm Feelin' So Sad and was nominated for another Drama Desk Award in 1979 for Wings.