In the etheric body are centered the forces animating man's physical vehicle, so disease is evidenced in the etheric before it manifests in the physical. The etheric, composed of finer, more attenuated substances than the physical, is corresponding amenable to vibratory influences. It is upon the former that harmony and rhythm have the most potent effect. Good music readjusts its molecular structure in accordance with the original divine plan, the archetype, and refines and accentuates it's vibratory currents. All forms of beauty and harmony increase this regenerating process.