A sociologist tries to convince a "bop" singer to switch to calypso, much to the ire of her Hollywood nightclub manager.
| Actor | Role |
|---|---|
 Judy TylerJo Thomas | Jo Thomas |
 Bobby TroupRobert Hilton | Robert Hilton |
 Margo WoodeMarion Hendricks | Marion Hendricks |
| MMary KayeHerself (as Mary Kaye Trio) | Herself (as Mary Kaye Trio) |
| TThe GoofersThemselves | Themselves |
| LLord FleaSelf | Self |
| NNino TempoSelf | Self |
 Lucien LittlefieldProf. Winthrop | Prof. Winthrop |
 George O'HanlonBarney | Barney |
 Jered BarclayJerry (as Jerry Barclay) | Jerry (as Jerry Barclay) |
| JJudy HarrietYMCA Rehearsal Singer | YMCA Rehearsal Singer |