The Happines Boys Billy Jones and Earnie Hare are invited to a party, but separate themselves from the rest of the guests, so they can not be urged to perform. However, they are watching the other guests from radio doing their stuff: song team Reece & Dunn, as well as the Funnyboners are singing, Smith Ballew and Frances Langford are exchanging love songs, Arthur Tracy tries his luck with a girl, just to find out that she prefers Bing Crosby and 4 orchestra leaders are trying to find out, who the best conductor is, by conducting a piece of recorded music....
| Actor | Role |
|---|---|
 Jerry WaldJerry Wald - Radio Row Reporter | Jerry Wald - Radio Row Reporter |
| BBilly JonesSelf (as The Happiness Boys) | Self (as The Happiness Boys) |
| EErnie HareSelf (as The Happiness Boys) | Self (as The Happiness Boys) |
 Smith BallewSinger | Singer |
 Frances LangfordSinger | Singer |
| LLes ReisReis (as Reis and Dunn) | Reis (as Reis and Dunn) |
| AArtie DunnDunn (as Reis and Dunn) | Dunn (as Reis and Dunn) |
| FFreddie RichOrchestra Leader | Orchestra Leader |
 Arthur TracyThe Street Singer | The Street Singer |
| JJack DennyOrchestra Leader | Orchestra Leader |
| JJacques RenardSelf | Self |
| MMeyer DavisSelf | Self |