To induce sleep (a delta brainwave of 5 hertz), a person may need to devote at least 45 minutes ... Classical Indian Music for Healing and Relaxing Gayatri Govindarajan, "Pure Deep Meditation" track.

Delta waves (0.5-4 Hz) signify a state of deep sleep. A binaural beat ... theta, or delta brain waves can provide some relief. Binaural beats music could reduce depression for some people, but ...