Spiritual sound vibrations have a unique potency to penetrate the layers of the body, mind and intellect, and directly resonate with the soul. Spiritual sound vibrations called mantras are specific combinations of sound that have a special potency. Kirtan yoga involves repeating the mantra collectively, in a call-and-response fashion using musical instruments. The word "kirtan" is from the ancient Sanskrit language and means "glorification of God". Kirtans form the core of the Bhakti yoga system …