Complex sentence: The melody was used to accompany the 1922 silent film, and features in the soundtracks for both the 1932 and 1941 MGM films of "Smilin' Through".
Split into simpler sentences: The melody was used to accompany the 1922 silent film. It also features in the soundtracks for both the 1932 and 1941 MGM films of "Smilin' Through".