James Pritchett has been adding to his blog series on Cage, now in six episodes: http://rosewhitemusic.com/piano/writings/cage-spirituality/ . This is a very useful addition to the thinking about John Cage’s work and ideas. Too often recent scholarship has stepped back from Cage’s spirituality as motivation for his work, preferring instead to focus on the nuts-and-bolts of his compositional technique. Pritchett, an expert in the philosophy and musical elements in Cage’s work, brings rich detail to his exploration. Very highly recommended.