He was very much concerned with logic and function, he always worked his solos out before playing them.

He really was a catalyst of this band in the beginning and he opened up new areas for Bill [Bill Bruford the group's "conventional" drummer] to look into as well as affecting the rest of us. "
In 1972 Muir decided to pursue a monastic lifestyle in accordance with the strict principles of Buddhism. He spoke of "approach[ing] the rubbish with a total respect for its nature as rubbish" and that "The way to discover the undiscovered in performing terms is to immediately reject all situations as you identify them (the cloud of unknowing) – which is to give music a future".