Astaire recalled how this success helped restore Berlin's flagging self-confidence. Astaire had never met Berlin before this film, although he had danced on stage to some of his tunes as early as 1915. There ensued a lifelong friendship with Berlin contributing to more Astaire films (six in total) than any other composer. Of his experience with Astaire in "Top Hat" Berlin wrote: "He's a real inspiration for a writer. I'd never have written "Top Hat" without him. He makes you feel so secure."