Listen to Harmony & Serenity online. Harmony & Serenity is an Instrumental language song and is sung by Baby Sleep Lullaby Academy. Harmony & Serenity, from the album Smooth Jazz Music Collection for Babies: Sleeping Piano Lullabies, Songs to Help Litlle Toddler Fall Asleep, Einstein Effect Music, Calm Newborn Sleeptime & Playtime, was released in the year 2016. The duration of the song is 3:11. Download Instrumental songs online from JioSaavn.