The most important or valuable thing that the music of the ancient people produced, and which greatly benefited humanity, was that they distinguished the different aspects of music, and thereby came to realize that there was a certain way of expressing the tone and rhythm which brought about a greater emotion, or an inclination towards action. Together with it they found out that there was a certain use of time and rhythm which brought about a greater equilibrium, and a greater poise. This science, developing after many years of practice, formed in itself a special psychological science or art called yoga, and the special name for this science was mantrayoga.