1946 song by Henry Warren, Arthur Freed
"This Heart of Mine" is a 1944 song written by composer Harry Warren and lyricist Arthur Freed, and featured in the musical score of the film, Ziegfeld Follies. The song is introduced by Fred Astaire, who dances with Lucille Bremer in a lavish and romantic dance sequence. In the same film, Esther Williams performs a water ballet to a softer, instrumental version of the song. Wikipedia