The music for the film was done by George and Ira Gershwin and actually the entire production was George's idea; he pushed to get the film green lit. Wodehouse impishly suggested that he wanted to do it because the hero in the story was a composer named George. Sadly, this was to prove Gershwin's final film, as he died of a brain tumor during filming; the movie was released a few months after his death.
This also isn't to imply that there isn't anything of value in the movie: Gershwin's music is, as usual, great. In fact, this movie introduced a couple of songs which have become standards: "A Foggy Day (In London Town)" and "Nice Work If You Can Get It". Also, Fred Astaire's dancing, when not hampered by Joan Fontaine, is spectacular. Below is the scene in which he dances to "Nice Work If You Can Get It":