For centuries ancient healers have used the power of sound to help heal the body, mind and soul. The ancient Buddhists recognized certain tones/sounds correlated with the chakra system.  The ancient Celts believed that sound/song brought the universe into existence. Throughout history, mothers have used lullabies to soothe their children.

 In modern times scientific research has shown that certain pitches, tones, and sounds create vibrations that can affect certain parts of the body.  Certain hertz can change brain waves to help with dementia, sleep, focus and calm the nervous system.  There is even preliminary research suggesting that sound can have a positive effect in treating cancer.