Jerry Wald has to write about radio, visiting Sid Gary gives him the tip it might be more easy for him to write this article at the radio station than at his newspaper office. At the studio they listen to the Boswell Sister's rehearsal, which is interupted by some not so friendly remarks by orchestra leader Abe Lyman, they listen at the door, where a Colonel Stoopnagel broadcast is prepared, as well as to the rehearsal of a new song for an broadcast by Kate Smith.

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....

Host Harry Rose mixes a "cocktail" of musical acts.