The musicians seen on screen throughout the film are actual Los Angeles musicians who perform and record film scores, with the exception of actors Don Cheadle and 'Alex Desert'.
Kathy Baker's singing in the film was dubbed by Sue Raney.
The musicians featured throughout the film are members of the Hollywood Studio Symphony orchestra.
Jack Sheldon who plays Norman the conductor, was a jazz trumpet player performing with the likes of Johnny Mandel and Stan Getz.
Lennie Niehaus who wrote the original score for this film as well as the arrangement of the jazz music used in the film is also a pure jazz artist with his own discography.