Mantra Yoga: the sound vibration
"The mantra is the sound that leads the mind beyond the mind."
You can experience the power of sound that leads to the level of consciousness beyond the mental and physical reality. Mantra Yoga is a practice that is distinct from Indian singing, the vocal appearance of the vocal mantra that comes out from the apparatus, is the starting point, when playing the sound output gradually decreases and finally the sound is internalized, it becomes internal vibration that can activate the energy body.
The mantra is not only a flow of sound but is a consciousness of consciousness.