Listen to Medley - Peg O' My Heart / The Gang That Sang "Heart of My Heart" online. Medley - Peg O' My Heart / The Gang That Sang "Heart of My Heart" is an English language song and is sung by Henry Jerome. Medley - Peg O' My Heart / The Gang That Sang "Heart of My Heart", from the album Retro Jazz Greats, was released in the year 2013. The duration of the song is 2:01. Download English songs online from JioSaavn.