(Zen Master Seung Sahn about chanting practice)
Chanting meditation means keeping a not-moving mind and perceiving the sound of your own voice. Perceiving your voice means perceiving your true self or true nature. Then you and the sound are never separate, which means that you and the whole universe are never separate. Thus, to perceive our true nature is to perceive universal substance.
With regular chanting, our sense of being centered gets stronger and stronger. When we are strongly centered, we can control our feelings, and thus our condition and situation. When we do chanting meditation correctly, perceiving the sound of our own voice and the voices all around us, our minds become clear. In clear mind, there is no like or dislike, only the sound of the voice. Ultimately, we learn that chanting meditation is not for our personal pleasure, to give us good feeling, but to make our direction clear. Our direction is to become clear and get enlightened, in order to save all beings from suffering.
So when you are chanting, you must perceive the sound of your voice: you and the universe have already become one, suffering disappears, true happiness appears. This is called nirvana. If you keep nirvana, your mind is clear like space. Clear like space means clear like a mirror. Red comes, red. White comes, white. Someone is happy; I am happy. Someone is sad; I am sad. Someone is hungry; give them food. The name for this is great love, great compassion, the great Bodhisattva way. That also means great wisdom. This is chanting meditation, chanting zen.
What’s important is to perceive the sound and become one with it, without separation, without making “I” and “sound.” At the moment of true perceiving, there is no thought, no separation, only perceiving sound. This is the crucial point. So during chanting time, perceive your own voice and the voices of others, just perceive this bell or drum sound, and cut off all thinking. Then your wisdom-mind will grow, you will get enlightenment, and thus save all beings.