The Om syllable is considered a mantra in its own right. A mantra (Sanskrit: मन्त्र) is a sacred utterance, a numinous sound, a syllable, word or phonemes, or group of words in Sanskrit believed by practitioners to have psychological and spiritual powers. Mantra meditation helps to induce an altered state of consciousness. A mantra may or may not have a syntactic structure or literal meaning, because it is the sound which connects - not the meaning. The earliest mantras were composed in Vedic Sanskrit by Hindus in India, and are at least 3000 to 5000 years old. At its simplest, the word ॐ (Aum, Om) serves as a mantra. In more sophisticated forms, mantras are melodic phrases with spiritual interpretations such as a human longing for truth, reality, light, immortality, peace, love, knowledge, and action. Some mantras have no literal meaning, yet are musically uplifting and spiritually meaningful, because the power is in its sound - the sound is connected to a certain form or energy. www.manishvyas.com/mantra