Relaxing Before Sleep - 6.8 Hz Theta Frequency
Quantum Theta Waves: Binaural Beats Music for Meditation, Deep Relaxation & Healing David & Steve Gordon, Binaural Beats Research 2018년 9월 14일
Quantum Theta Waves: Binaural Beats Music for Meditation, Deep Relaxation & Healing David & Steve Gordon, Binaural Beats Research 2018년 9월 14일