Bert Kalmar always wanted to be a magician, but all it takes is a disastrous opening night to make his dream go poof! So Kalmar moves on...and finds songwriting magic with collaborator Harry Ruby. The stage-and-screen songsmiths whose many tunes include Groucho Marx's signature Hooray for Captain Spaulding receive a Hollywood hooray in this cheerful screen bio featuring a hit parade of Kalmar and Ruby standards (including the title tune and Who's Sorry Now). Astaire puts on his dancing shoes for duets with Vera-Ellen and a tap solo. And Debbie Reynolds, in an early screen appearance, portrays Boop-Boop-a-Doop sensation Helen Kane. You'll be Boop-Boop-a-Delighted.