Nine is a musical play with a book by Arthur Kopit and music and lyrics by American composer Maury Yeston.
The show is a theatrical adaptation of the Federico Fellini film 8½. Fellini's essentially autobiographical story concerns the difficulties of the film director Guido Contini, fresh off the greatest hit of his career so far, to endure a midlife crisis that has blocked his creative impulses and entangled him in a web of romantic difficulties. Supposedly, Fellini was not overstating his writer's block; just like Guido, he had no clue what to make his next movie about. The conundrum reached such proportions that he named the film 8½ in recognition that his prior body of work had included six full-length films, two short films, and one film that he co-directed. Therefore, assigning half-credits as appropriate, the project in question (assuming he ever finished it) represented a potential advance in Fellini's total output from 7.5 to 8.5 films. Yeston's title for his musical is a joke on this story, counting the musical adaptation as another half-credit notch in the ledger.
The original 1982 Broadway production, directed by Tommy Tune and starring Raul Julia as Guido, the only man in an otherwise all-female cast, completely recouped its investment and went into profits, Yeston's score earned widespread critical approval, and the production won the Tony Award for Best Musical.
A 2003 Broadway revival starred Antonio Banderas as Guido, Mary Stuart Masterson as his wife (Luisa), Jane Krakowski as his mistress (Carla), Laura Benanti as his erotic obsession of the moment, and Chita Rivera as his producer (Liliane).