Listen to Brainwave Entrainment - Music to Sleep, Delta Waves online. Brainwave Entrainment - Music to Sleep, Delta Waves is an English language song and is sung by Asian Zen Spa Music Meditation. Brainwave Entrainment - Music to Sleep, Delta Waves, from the album 101 Spa - Pure Spa Massage Songs for Healing Meditation, Deep Purification & Yoga Class, was released in the year 2016. The duration of the song is 5:15. Download English songs online from JioSaavn.