Ans. All Ved Mantras have a poetic composition (syntax) with specified musical notes. When a Mantra is recited acoustic vibrations surpassing ultrasonic frequencies are produced. These waves travel in an "extra-sensory telepathic medium" enveloping the cosmos and interact with the thought processes of all living beings. In order to strengthen the intensity of these waves, the Gayatri Mantra is recited in course of Yagya -Havan, on auspicious occasions and at the beginning of all religious ceremonies. Three different types of musical (phonetic) compositions are mentioned for the Gayatri Mantra in the Veda s. The one specified in the Yajur veda is recommended for the masses.