Listen to Study No. 1: Octaves online. Study No. 1: Octaves is an Instrumental language song and is sung by Deep Sleep Hypnosis. Study No. 1: Octaves, from the album Sleep Hypnosis 101 - Healing Sleeping Therapy Background Songs to Reduce Stress, was released in the year 2018. The duration of the song is 4:56. Download Instrumental songs online from JioSaavn.