Let's start out with what should be an easy one, presuming you have at least a passing knowlege of Jolson material. Which famous Jolson song is not in the film biography of Al Jolson, The Jolson Story? You said 5. April Showers Hello? You were paying attention to the movie, no? This could be another question, that this is the only song sung twice in the movie. The first time straight, to Julie, and with a jazzy arrangement to close the movie. Better get that tape out and watch it again.