Listen to I Let a Song Go out of My Heart online. I Let a Song Go out of My Heart is an English language song and is sung by Red Norvo and Mildred Bailey. I Let a Song Go out of My Heart, from the album Mr. And Mrs. Swing: Red Norvo and Mildred Bailey Complete Recordings, was released in the year 2014. The duration of the song is 3:00. Download English songs online from JioSaavn.