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A harp and piano sleep BGM that incorporates a beautifully sounding actual Solfeggio frequency tuner 528Hz 396Hz, and also interweaves theta waves and natural sounds.

Please dive into the world of deep sleep while being wrapped in the healing melody and the sound of recovery from fatigue.

#Sleep bgm #Sleep Solfeggio frequency # 528Hz #Theta wave #Binaural beat #Sleep introduction #Natural sound # 1 / f fluctuation #Harp #Piano