デルタ波: 深い眠りのための音楽、不眠症睡眠障害の治療、夢を見ながら深く眠る |
Delta Dreamland: Calming Delta Waves Sleep BGM for Deep Rest and Insomnia Relief |
Insomnia Be Gone: Calming Music for Deep Sleep, Delta Waves, Relaxation Therapy |
3 Hz Binaural Beats (Delta Waves) |
6 Hz Binaural Beats (Delta Waves) |