Instead of trying to figure out the koan, whatever koan it is, using the intellect and objective judgements and so forth, can one listen to the koan the way one would listen to music? What is the spirit of the Mu koan, for example? What is the quasi-intangible spirit of it? How can this be embodied in everyday life and on the cushion? What was Joshu's mood when he said Mu?
Listening like this means that one has to loose one's hold on 'enlightenment' and 'transcendence' and just listen to Mu inwardly. How can this same approach be done to approach the breath, or the body? What is the spirit of this practice? What underlies our devotion to it? Our inward knowing that it is the way to settle our doubts about life, and to step into a true way of being?