This BGM album is specially tuned to the Solfeggio frequency of 528Hz, also known as the"Miracle Frequency." It is believed to support cellular and DNA repair, alleviate stress, balance the autonomic nervous system, and promote both physical and mental relaxation.Jazz where the solitude of the urban night and the melancholy of blues merge. Its soul-stirring sound evokes deep empathy. This is special night BGM for adults.