"Oh, What Songs of the Heart" is a Mormon hymn, the text of which was written by Joseph L. Townsend, a Latter-day Saint poet who lived in the late 19th and early 20th century. The music was written by Latter-day Saint musician William Clayson. It is one of the few hymns of the Church of Jesus Christ of Latter-day Saints that implies the existence of a Heavenly Mother.
"Oh, What Songs of the Heart" is hymn #286 in the LDS Church's current hymnal.