It tells the story of the Woodland Community Swing Variety Show on radio station KUKU.
This cartoon features many different caricatures of then famous celebrities. Among the likes include Jack Benny, Eddie Cantor, Irwin Cobb (Irwin Frog), Bing Crosby (Bing Crowsby), W.C. Fields (W.C. Fieldmouse), and many others.
KUKU is the name of an actual FM radio station based in Willow Springs, Missouri.
This is one of those AAP CN airings, minus the AAP opening, although a dubbed version does exist, which airs from time to time. This same CN print has the zooming WB shield cut off from the print.
The 1995 EU dubbed version replaces the 1938 opening music by the 1941-45 one.