Listen to Guitar Restful Harmony online. Guitar Restful Harmony is an Instrumental language song and is sung by Guitar Serenity, Sleep Soundly and Sleep Repeat Music. Guitar Restful Harmony, from the album Soothing Guitar Music: Restful Sleep Rhythms, was released in the year 2025. The duration of the song is 2:41. Download Instrumental songs online from JioSaavn.