This Heart of Mine is a 1946 song. This music standard was written by composer Harry Warren and lyricist Arthur Freed to be featured in the musical film score, Ziegfeld Follies. This song is introduced by Fred Astaire who danced with Lucille Bremer in a lavish and romantic dance. In the same film, Esther Williams swam in a water ballet to a softer, instrumental version of the song. Judy Garland and Maxine Sullivan have also recorded this song.