Everything that lives is in flux. Everything that lives emits sound. But we only perceive a part of it. We do not hear the circulation of the blood, the growth and decay of our bodily tissue, the sound of our chemical processes. But our delicate organic cells, the fibres of brain and nerves and skin are impregnated with these inaudible sounds. They vibrate in response to their environment. This is the foundation of the power of music.