Om (also spelled Aum) is the oldest and most sacred sound found in yoga, Hinduism, and Buddhism. Not only Om represents the entire universe, known as Brahman, it is also said to be the source of all creation. Om it represents all time: past, present and future, and is beyond time. Om it represents the eternal unity of all that is, and thus represents the ultimate goal of yoga: to become unified in body, mind, and spirit. chant the mantra Om it is perhaps the oldest of the spiritual practices of yoga. In the Mandukya Upanishad (one of the more than 200 sacred Hindu books) we find this beautiful passage: "The body is the bow, Om is an arrow, the arrowhead is the focused mind, and the ultimate mystery is the goal." Therefore, meditation on Om it is used to guide and discover the Higher Self, the true nature of the universe. People say that Om is the essence of all mantras, and is used as the "mula-mantra" or the root and beginning of most mantras. Om It is used within sacred chants to increase their power and empower them, as well as to take the practitioner into a deep internal state. Though indivisible, Om it has four subtle sounds that correspond to four levels of consciousness. - The first sound of the "A" represents Vaishvanara, the conscious waking state. - The second sound of the "U" represents Taijasa, the subtle state, the unconscious sleep. - The sound of the third part of "M" represents the Prajna, the casual state, subconscious deep sleep. - The fourth sound is the silence that follows the sound of Om which represents the Turiya, the absolute consciousness that illuminates and permeates the three previous states. when singing Om, the same measure must be taken into account both the "O" and the "M" sound, that is, "oooommmm" and not "oommmmmm" or "oooooomm". the mantra Om it can be sung aloud, muttered, or repeated mentally. the song of Om It should be easy and natural, effortless. Usually when you sing Om out loud is always long and when mentally it is short, but you have to experiment and do what you feel most comfortable with. when singing Om you can also focus your gaze on the center of the third eye, the sixth chakra. if you use Om as a mantra-meditation you may wish to use a mala to count the repetitions of 108. Enjoy the wisdom of the practice of reciting Oooommmm...
Namaste, Nina.