AUM means exactly what Zen people call “the sound of one hand clapping”. AUM is the innermost music of your being. When all the thoughts and desires and memories have gone, have disappeared, and the mind is absolutely quiet and silent, there is no noise inside, you start hearing a tremendously beautiful music which does not consist of any meaning. It is pure music without any meaning, gives you great joy, fills you with celebration, makes you dance. You would like to shout “Alleluia!” But the music itself has no meaning; it is pure music, not polluted by any meaning. AUM represents that inner music, that inner harmony, that inner humming sound which happens when your body, your mind, your soul are functioning together in deep accord, when the visible and the invisible, the manifest and the unmanifest are dancing together.