Listen to A Happy World (Peaceful Music) online. A Happy World (Peaceful Music) is an Instrumental language song and is sung by Sleep Baby Sleep. A Happy World (Peaceful Music), from the album Baby Sleep Sack - Relaxing Lullabies, Beautiful Piano Music for Helping babies to Self Soothe & Sleep Through the Night, was released in the year 2020. The duration of the song is 6:25. Download Instrumental songs online from JioSaavn.