Nada Yoga – The Yoga of Inner Sound
Having taken his meditation posture, and prepared himself mentally and physically – by quieting his mind, relaxing, and feeling a deep global sensation of his body – the seeker should now decide firmly not to move any more. Closing his eyes, he should remain as still as possible, listening internally with sustained attention.
If he can be inwardly quiet enough and deeply absorbed in the search, he will, if he is truly persistent, suddenly become aware of an unusual, feeble sound that can be heard deep inside the ears and head, concealed from him before and obscured by the din of his incessant mental restlessness. It could be called the primordial sound.
If, at this stage, the seeker can succeed in remaining sufficiently alert and aware while maintaining his effort of intense concentration, he cannot possibly fail to observe that this sound has an extraordinarily uninterrupted continuity about it, a crystal-like vibration that resembles the noise of the ocean with many other different “ultra” sounds superimposed on it.
When the aspirant is full engrossed in his meditation and is sufficiently freed from the grip of his lower self, he will perceive that the more he rises to, and becomes merged in, the higher levels of his consciousness, the louder and more shrill the sound will get.
He will also begin to note with wonder that this sound has a curious unearthly sparkle about it, somewhat reminiscent of the flickering light of a star, so that it seems almost imperceptibly to oscillate continuously inside his head.
When the aspirant employs this Nada (inner sound) as the main support for his meditation, he must follow all its slender fluctuations, subtle variations of note, and mysterious jewel-like glitterings, second by second, with the utmost diligence. He will discover that this unusual sound with its strange vibrations, celestial twinklings, and above all, enigmatic continuity will become a most precious support for his concentration in all his future meditations.
From that day onward, the frequency with which he will lose himself in his habitual self-forgetfulness and mental reveries will decrease considerably.
The special benefit that the seeker will derive from this mystical sound is priceless. First, it will sustain him in his meditation by giving his attention something definite to hold on to and so allow him to concentrate better with little or no wavering.
Second, it will have a particularly purifying and calming effect on his mind as well as his feelings.
Third, it will help him, little by little, to rise to the higher and more luminous planes of his consciousness.
Finally, it will become the means for an ardent and sincere aspirant to become immediately aware when his attention begins to weaken and waver during his meditation.
Adapted from The Law of Attention: Nada Yoga and the Way of Inner Vigilance, by Edward Saim Michael (Inner Traditions, 2010).