Listen to Deep Slumber online. Deep Slumber is an English language song and is sung by Best Relaxation Music. Deep Slumber, from the album Sleep Harmony – Soft Music to Bed, Sweet Dreams, Restful Sleep, Healing Lullabies at Goodnight, Relaxing Therapy, Tranquility, was released in the year 2017. The duration of the song is 3:04. Download English songs online from JioSaavn.