"Music of My Heart" is a song by Cuban American recording artist Gloria Estefan and American boy band NSYNC. The teen pop song was written by Diane Warren and produced by David Foster, for the Wes Craven-directed movie Music of the Heart (1999). It was released as the first single from the soundtrack on September 28, 1999, through Miramax Records and Epic Records.

"Music of My Heart" received four important nominations: the Academy Award for Best Original Song, and two for the Grammy Award for Best Song Written for a Motion Picture and Best Pop Collaboration with Vocals. The last nomination was for the Billboard Music Awards for Top Song from a Movie, and was the only award which Estefan won of all the nominations received for the song. Also, Gloria Estefan achieved a Blockbuster Award for Best Pop Song in a Movie. The song ended at the Billboard Year-End Charts at #97 after peaking at #2 on the Billboard Hot 100 earlier in the year 1999. The single was certified Gold by the RIAA in the United States for sales of 500,000 copies.