FOUR ELEMENTS INNER SPONTANEOUS SOUND YOGA
It is also called: Astral sound, Dharmata Swayambhu Nada, Divine Tremoring, Eternal Sound, Inner Sound, Music of the Spheres, Primordial Sound, Sacred Sound, Shabda, Sound of Creation, Sound of Silence, also Thunder of Silence, Soundless Sound, Transcendental Sound, Unborn Sound, Unstruck Sound, and The Word of God.