This BGM album is specially tuned to 417Hz. 417Hz is a frequency said to be closely aligned with natural rhythms such as human heartbeat and breathing, offering a soothing and gentle sound experience. It is known to help release muscle tension, balance the autonomic nervous system, reduce stress, improve sleep quality, and support sustained focus and concentration. Perfect for work, study, or winding down before sleep, this album brings a calming atmosphere that helps you feel at ease. Let yourself be embraced by a sense of peace through its gentle tones.Gentle and comforting jazz lullabies that guide you into deep sleep. It softly releases tension from mind and body, promising a peaceful night. This is ideal for those suffering from insomnia or seeking high-quality sleep.