Rambling 'Round Radio Row #5

The story

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....