Sound Healing is founded on the premise that all matter is vibrating at specific frequencies. Science has proven that sound, or vibration, has a strong impact upon substance. For example, the study of Cymatics has shown how sound creates geometric patterns in matter. Dr. Emoto has proven that sound changes the molecular structure of water. However, more importantly, sound changes consciousness. Many ancient civilizations and modern indigenous cultures have used sound to heal and access higher levels of consciousness for thousands of years.There are a wide range of techniques that utilize sound as a tool for change. The most common and basic use of sound is for meditation and relaxation. Chanting, toning and overtone singing are some of the most powerful methods for resonating sound throughout the body. The use of nature sounds and natural instruments, such as crystal bowls and tuning forks, have specific healing frequencies and harmonics. Drumming and rhythm are now used by corporations to release stress and build team consciousness. Shamanic drumming takes people into altered states of consciousness. Sound is now being using by clinical psychologists to help children with certain learning disabilities. Binaural beat frequencies are used to entrain people into very specific states of consciousness. Sound is used to alter brainwave states to help people with sleep disorders and facilitate creative expression. Listening to one's own root frequency enables an individual to create a more centered and grounded awareness within their life. The technique called Bio-Tuning uses root frequencies and binaural beats, played back through a sound table, to entrain people into specific brainwave states. Sound and music are also used to help with difficult life transitions, including birth and death. The medical community also uses sound and music in a variety of applications such as: during surgery to relieve pain, to break up gall stones and to relax muscles using ultrasound.