More information on Sonotherapy:
The most important principle of sound healing may be considered Resonance... the frequency of vibration that is natural to a specific organ or body system (such as the heart or the respiratory system). This innate frequency is known as the prime resonance.
At the cellular level, all cells emit sound frequencies as a consequence of their metabolic processes. Further, there is an interaction between the cells' own sounds and those imposed by the environment, including sound healing devices. The resonance principle implies cellular absorption of the healing sounds that are introduced and/or their harmonics. In sound healing, resonance principles are engaged to re-harmonize cells that have been imprinted with disruptive frequencies. Such troublesome imprints may have been a result of toxic substances, emotional traumas, pathogens, or long-term exposure to noise pollution.
There is now a mass of research into the healing benefits of ultrasound, including its use in breaking up kidney stones and shrinking tumors. In addition, infrasound and audible sound are now also recognized as having immense healing properties