The Gayatri Mantra, One example is, is Just about the most revered mantras in Hinduism which is chanted for knowledge and enlightenment. Upamsu Japa is whispering or buzzing the sacred terms quietly as a means to cultivate peace and harmony. Manasika Japa is inner chanting, or chanting in the intellect https://www.youtube.com/@AacharyaGoldieMadan