勉強、作業中にお聞き下さい。Purify your mind and body and charge your energy just by listeningRelaxing and super-concentrated brain waves (mid-α waves) Healing BGM to relieve fatigueEducation, learning, reading, meditation, hypnosis, self-suggestion, etc.Please listen while studying and working.It also has a healing effect to relieve stiffness (tiredness) in the brain.