**mp3 file is the compressed version which has lower quality than the wav file
Mid Delta Wave Binaural Beats (Binaural Tracks Series, Vol. II) This piece contains mid delta wave binaural beats used for brain entrainment. Delta waves can be used in order to decrease our awareness of the physical world and are the most present brain waves during the deepest stages of sleep. These waves can be highly beneficial for falling asleep, easing into a trance, or allowing your body to rejuvenate.