I work as a full-time musician and suffer on and off with back problems. I understood the meaning of sound but not how sound healing works. I completed the sound healing course mostly for my own personal use. The self dowsing has helped me so much to identify the foods that trigger some of my aches and pains. I was surprised at the amount of information you provided in the demonstration videos. This has been a new lease of life for me. I also apply sound healing techniques to myself to help ease my pains and to de-stress. Thank you all very much.