Ecstatic singing is a more direct passage to transformational experience than hyperventilation, posture, or hypnotic entrainment. Stand under the stars and sing wildly at the top of your lungs, doing so over and over again. Throw all the feeling you have into the song. Allow the tremors of your voice to shake your whole body. In a matter of time, the sky will open and you will step inside a vision.
— Bradford Keeney, Shaking Medicine