Listen to Night Thunder Harmony: Relaxation Sleep Aid online. Night Thunder Harmony: Relaxation Sleep Aid is an Instrumental language song and is sung by HarmonicLab Music. Night Thunder Harmony: Relaxation Sleep Aid, from the album Thunderstorm Rainfall Escape: Distant Thunder and Gentle Rain for Deep Rest, was released in the year 2024. The duration of the song is 2:06. Download Instrumental songs online from JioSaavn.