Interesting concept, Zen guitar......reminds me of Vai's excercise where you pick one note only for an hour and make yourself concentrate only on that sound and not let the mind wander. Its a pretty nauseating excercise, I felt drained dry by the time i finished.......and it drove my neighbours nuts hearing the same sound over and over and over.....

The mental side of guitar playing provided a whole new approach for me. I used to study theatre and got into Stanislavski's concepts of emotional memory and impulse channelling and so on....thats all for acting but it goes well with music too.

Although I still get lots of ideas just by picking up the guitar and 'meandering'