New Edition Includes a Bonus CD containing original recordings of Laurel Keyes plus Don Campbells comments and demonstration. Fact Sound vibrations move and alter matter. The purpose of sound has forever been used primarily for communication or entertainment but the true benefits of sound are also known to be an ancient method of healing. The benefits are felt when people speak sing hum chant as Laurel Elizabeth Keyes explained in her groundbreaking book Toning over 30 years ago. The specific act of toning creates vocal sounds and vibrational patterns that influence health and wellbeing. Toning the Healing and Creative Power of the Voice contains the results and observations that Laurel Keyes experienced while experimenting in her own body as well as in others.One person who applied the lifechanging healing technique is Don Campbell bestselling author of The Mozart Effect who credits much of his success to the tools he acquired from Toning.