Om is the symbol for the whole universe.
It carries three basic sounds: A-U-M. These three basic sounds through which all the sounds have evolved.
So Om is the basic trinity of sound, the synthesis of all the basic roots.
That’s why Om is considered the secret mantra, the greatest mantra, because it implies the whole existence.
it represents the sound of soundlessness, the beauty of silence.
OM represents the music of existence, the soundless sound, the sound of silence. OM represents the inner most music of our being, the inner harmony, the inner humming sound which happens when our body, mind, soul are in deep totality, when the visible and the invisible, the un-manifest and the manifest, the relative and absolute, the-outer and inner are in deep togetherness.
To become one with OM-the music of existence is to attain fulfillment.