Delta Waves - 8 hours - Black Screen - Deep Sleep - Meditation - Sleep Therapy - Memory Improvement

8 hours of Delta Waves, Deep Sleep Music on a Black Screen.
A Delta Wave is a high amplitude brain wave with a frequency of oscillation between 0–4 hertz. Delta Waves, like other brain waves, are recorded with an electroencephalogram (EEG) and are usually associated with the deep stage 3 of NREM sleep, also known as slow-wave sleep (SWS), and aid in characterizing the depth of sleep.
Use this relaxing music on background for Deep Sleep Meditation, Improve Memory, DNA Repair, Beat Insomnia. Totally relax your mind and body.