Synopsis
Porky, a talent scout for "Goode and Korney Talent Agency," auditions various acts. A final gag has a wolf performing this "stupendous act" where he wears a devil hat, cape and the like, drinks nitroglycerin, gasoline and other explosive stuff, then swallows a match. KABOOM! Porky thinks that the act is really good until the wolf's ghost comes in and says that there's a catch... "I can only do it once!"(Source: bcdb.com)
Main Casting
 Mel Blanc
Porky Pig / Grasshopper / Turtle / Al Jolson / Janitor / Dog / Flea Circus Dog (voice)
 Dave Barry
Various (voice) (uncredited)
 Stan Freberg
Fox (voice) (uncredited)
Dorothy Lloyd
Various (voice) (uncredited)
 Cliff Nazarro
Various (voice) (uncredited)
John Woodburry
Sinatra and Crosby birds (singing) (uncredited)
Ratings
 TMDB
 6.5Technical team
Friz Freleng Directing
Production
Warner Bros. Pictures
Warner Bros. Cartoons