Broadway Melody of 1940 a 1940 MGM movie musical starring Fred Astaire, Eleanor Powell and George Murphy, directed by Norman Taurog featuring music by Cole Porter, including the infamous Begin the Beguine. {See the clip)
The film was the fourth and final entry in MGM‘s Broadway Melody series of films, and is notable for being the only on-screen pairing of Astaire and Powell.
The original Broadway Melody was released in 1929, followed by Broadway Melody of 1936 & Broadway Melody of 1938. Powell starred in the 1936, 1938 and 1940 entries, playing different roles in each before retiring from the screen several years later. As to Astaire it was his first film for MGM since he had just left RKO.