When touching on this point of awareness in teisho (zen talk), Yamada Roshi would sometimes point to Larry McGarrell, a Jesuit pianist and disciple. "Have you ever noticed how he gathers all his forces into unity when he plays the piano? As he leans over the keyboard, his whole being is directed towards the music, his body, his mind, his emotions, his everything. If only all that united concentration were directed inwardly, it would be perfect zazen.
Let's check ourselves occasionally and see how aware we are during the day. Not how we are doing something, but just the fact that we are doing it, the living fact!
— Elaine MacInnes, Light Sitting in Light