Sound therapy refers to a range of therapies in which sound is used to treat physical and mental conditions.
Indigenous societies around the world have traditionally used sound in healing ceremonies, including drumming, hand-clapping, singing, dancing, and pulsating. The broad spectrum of sound therapy includes chanting, an activity long connected to healing and religion, and sounds of nature. Different sounds have elicited a variety of emotional responses and altered mental and physical states in people. (encyclopedia.com)