In 1927, a Kansas City, Missouri cornet player and his band perform nightly at a seedy speakeasy until a racketeer tries to extort them in exchange for protection.
| Directing | Jack Webb | Director |
| Writing | Richard L. Breen | Screenplay |
| Production | Jack Webb | Producer |
| Sound | David Buttolph | Music |
| Sound | Ray Heindorf | Music |
| Editing | Robert M. Leeds | Editor |
| Crew | Harold Rosson | Cinematography |
| Art | Harper Goff | Production Design |
| Art | Feild M. Gray | Art Direction |
| Art | John Sturtevant | Set Decoration |
| Costume & Make-Up | Howard Shoup | Costume Design |
| Costume & Make-Up | Gordon Bau | Makeup Artist |
| Costume & Make-Up | Stanley E. Campbell | Makeup Artist |
| Directing | Harry D'Arcy | Assistant Director |
| Sound | Leslie G. Hewitt | Sound |
| Sound | Dolph Thomas | Sound |
| Crew | Helen Thurston | Stunts |
| Lighting | James Potevin | Electrician |
| Costume & Make-Up | Gene Martin | Wardrobe Master |
