And the Angels Sing (1944) is a classic example of a film musical written to capitalize on the title of a previously popular song; in this case Benny Goodman's 1939 number one hit song, "And the Angels Sing" by Ziggy Elman and Johnny Mercer, and sung by Martha Tilton although the song is not sung in the film. The standout original songs in the musical were It Could Happen To You (song) sung by Dorothy Lamour, which quickly became a pop standard and "His Rocking Horse Ran Away," which became one of Betty Hutton's most popular numbers.