Listen to Fretboard’s Restful Tones online. Fretboard’s Restful Tones is an Instrumental language song and is sung by Some Guitar Songs, Calm Sleep Sounds and Deep Sleep Music Company. Fretboard’s Restful Tones, from the album Sleep Harmonies: Soothing Guitar Music for Rest, was released in the year 2025. The duration of the song is 3:00. Download Instrumental songs online from JioSaavn.