Six amateur musicians accept an offer to play a 2-week gig in the Catskills. When the bass player suddenly falls ill, they recruit a genuine pro to fill in. As they embark on the opportunity of a lifetime, dreams and reality begin to collide.
| Actor | Role |
|---|---|
 Wayne RogersMarty Flynn | Marty Flynn |
 Cleavon LittleMarshall WIlson | Marshall WIlson |
| JJerry MatzAaron Wohl | Aaron Wohl |
| DDaniel NalbachArthur Winslow | Arthur Winslow |
| WWarren VachéGil Macrae | Gil Macrae |
 Joe SilverAbe Mitgang | Abe Mitgang |
 Jay ThomasRick Valentine | Rick Valentine |
| SStan LachowGeorge Pappas | George Pappas |
| CCelia BressackLucy | Lucy |
| GGeorgia HarrellThe Blonde | The Blonde |
 Michael FischettiVincent Amatri | Vincent Amatri |
| SSusan EgbertLaura Macrae | Laura Macrae |
| KKaren AshleyJanet Larmon | Janet Larmon |
| VVirginia DowningMrs. Winslow | Mrs. Winslow |
| VVirginia DowningThe Driver | The Driver |
 Annie KorzenMiss Gresh | Miss Gresh |
| NNancy ParkerNot listed | Not listed |
| NNancy ParkerDirector | Director |
| NNancy ParkerArthur's Patient | Arthur's Patient |
| EEd StevlingsonMr. Oglivie | Mr. Oglivie |
 Andrew DuncanJack Larmon | Jack Larmon |