Om or Aum is of supreme importance in Hinduism. This symbol is a sacred syllable representing Brahman, the impersonal Absolute - omnipotent, omnipresent, and the source of all manifest existence. Brahman, in itself, is incomprehensible; so a symbol becomes mandatory to help us realize the Unknowable. Om, therefore, represents both the unmanifest (nirguna) and manifest (saguna) aspects of God. That is why it is called Pranava, to mean that it pervades life and runs through our prana or breath.

Ancient teachings and modern science agree that all living things in existence are made up at their most essential level of vibrating, pulsing energy.

For millennia, mystics have recounted their experience of this energy, which is said to manifest in our hearing awareness as a humming vibration around and within everything else.

In the Sanskrit tradition, this sound is called “Anahata Nada,” the “Unstruck Sound.” Literally, this means “the sound that is not made by two things striking together.” The point of this particular distinction is that all ordinary audible sounds are made by at least two elements: bow and string; drum and stick; two vocal cords; two lips against the mouthpiece of the trumpet; the double reed of the oboe; waves against the shore; wind against the leaves. Things create all sounds within our range of hearing visible or invisible, striking each other or vibrating together, creating pulsing waves of air molecules, which our ears and brain interpret as sound.

So, sound that is not made of two things striking together is the sound of primal energy, the sound of the universe itself.

Tradition has it that this ancient mantra is composed of four elements: the first three are vocal sounds: A, U, and M. The fourth sound, unheard, is the silence, which begins and ends the audible sound, the silence that surrounds it.

According to the Mandukya Upanishad “Om is the one eternal syllable of which all that exists is but the development. The past, the present, and the future are all included in this one sound, and all that exists beyond the three forms of time is also implied in it”.

The Music of Om
Om is not a word but rather an intonation, which, like music, transcends the barriers of age, race, culture and even species. It is made up of three Sanskrit letters, aa, au and ma which, when combined together, make the sound Aum or Om. It is believed to be the basic sound of the world and to contain all other sounds. It is a mantra or prayer in itself. If repeated with the correct intonation, it can resonate throughout the body so that the sound penetrates to the centre of one’s being, the atman or the soul.

“A” (pronounced “AH” as in “father") resonates in the center of the mouth. It represents normal waking consciousness, in which subject and object exist as separate entities. This is the level of mechanics, science, logical reason, the lower three chakras. Matter exists on a gross level, is stable and slow to change.

Then the sound “U” (pronounced as in “who") transfers the sense of vibration to the back of the mouth,
and shifts the allegory to the level of dream consciousness. Here, object and subject become intertwined in awareness. Both are contained within us. Matter becomes subtle, more fluid, rapidly changing. This is the realm of dreams, divinities, imagination, and the inner world.

“M” is the third element, humming with lips gently closed. This sound resonates forward in the mouth and buzzes throughout the head. This sound represents the realm of deep, dreamless sleep. There is neither observing subject nor observed object. All are one, and nothing. Only pure consciousness exists, unseen, pristine, latent, covered with darkness. This is the cosmic night, the interval between cycles of creation, the womb of the divine Mother.

There is harmony, peace and bliss in this simple but deeply philosophical sound. By vibrating the sacred syllable Om, the supreme combination of letters, if one thinks of the Ultimate Personality of Godhead and quits his body, he will certainly reach the highest state of “stateless” eternity, states the Bhagavad Gita.

The Vision of Om
Om provides a dualistic viewpoint. On one hand, it projects the mind beyond the immediate to what is abstract and inexpressible. On the other hand, it makes the absolute more tangible and comprehensive. It encompasses all potentialities and possibilities; it is everything that was, is, or can yet be. It is omnipotent and likewise remains undefined.

The Power of Om
While meditating, while chanting Om, we create within ourselves a vibration that attunes sympathy with the cosmic vibration and we start thinking universally. The momentary silence between each chant becomes palpable. Mind moves between the opposites of sound and silence until, at last, it ceases the sound. In the silence, the single thought -Om- is quenched; there is no thought. This is the state of trance, where the mind and the intellect are transcended as the individual self merges with the Infinite Self in the pious moment of realization. It is a moment when the petty worldly affairs are lost in the desire for the universal. Such is the immeasurable power of Om.