On screen
Cast
6 credited performers
Mel Blanc
Porky Pig / Grasshopper / Turtle / Al Jolson / Janitor / Dog / Flea Circus Dog (voice)
Dave Barry
Various (voice) (uncredited)
Stan Freberg
Fox (voice) (uncredited)
Artwork unavailable
Dorothy Lloyd
Various (voice) (uncredited)
Cliff Nazarro
Various (voice) (uncredited)
Artwork unavailable
John Woodburry
Sinatra and Crosby birds (singing) (uncredited)