Listen to Calm Strings Tranquil Sleep online. Calm Strings Tranquil Sleep is an Instrumental language song and is sung by Guitars Against Covid-19, Relaxing Acoustic Guitar Nature and Guitar Cafetéria. Calm Strings Tranquil Sleep, from the album Guitar Music for Sweet Sleep, was released in the year 2025. The duration of the song is 2:45. Download Instrumental songs online from JioSaavn.