Nine is a 2009 romantic musical drama film directed and co-produced by Rob Marshall from a screenplay by Michael Tolkin and Anthony Minghella, based on the stage musical of the same name, which in turn is based on the 1963 film 8½. In addition to songs from the stage musical, all written by Maury Yeston, the film has three original songs, also written by Yeston. The ensemble cast consists of Daniel Day-Lewis, Marion Cotillard, Penélope Cruz, Judi Dench, Fergie, Kate Hudson, Nicole Kidman, and Sophia Loren.

Michael L. Tolkin is an American screenwriter, novelist, and director. He has written numerous screenplays, including The Player (1992), which he adapted from his own 1988 novel of the same name, and for which he received the Edgar Award for Best Motion Picture Screenplay (1993) and was nominated for the Academy Award for Best Adapted Screenplay. He later wrote a follow-up to the novel, titled The Return of the Player, which was published in 2006.