Drifting off into Sleep - 6.8 Hz Theta Frequency Binaural Beats

歌曲	Drifting off into Sleep - 6.8 Hz Theta Frequency Binaural Beats
歌手	Binaural Beats Research
专辑	Over 3 Hours of Theta Waves Meditation Binaural Beats & Isochronic Tones Music & Nature Sounds