Listen to Tranquil Sea online. Tranquil Sea is an Instrumental language song and is sung by RelaxMyDog, Pet Music Therapy and Dog Music Zone. Tranquil Sea, from the album Dog Music: Calming Lullabies Your Dog Will Love to Sleep To, was released in the year 2019. The duration of the song is 3:01. Download Instrumental songs online from JioSaavn.