"Night and Day" is perhaps Porter's most popular contribution to the Great American Songbook and has been recorded by dozens of artists. Fred Astaire introduced "Night and Day" on stage, and his recording of the song was a #1 hit. He performed it again in the 1934 film version of the show, renamed The Gay Divorcee, and it became one of his signature pieces. There are several accounts on how Porter got inspiration to compose the song. One mentions that he was inspired by Islamic prayer when he visited Morocco. Another popular legend has it he was inspired by the Moorish architecture of the Alcazar Hotel in Cleveland Heights, Ohio. The song was so associated with Porter, that when Hollywood first filmed his life story in 1946, the movie was entitled Night and Day.