Lockie wrote:Is there any good books available for the guitar?
There's plenty of material regarding quartal harmony if you're interested in a general way e.g. Schoenberg, Satie, Scriabin etc. but I'm not aware of anything guitar specific other than Robert Fripp's work with King Crimson and his so called "new standard".
I was an avid KC afficianado and toyed with turning "craftie" at one time. If you feel like experimenting with his tuning you'll need a special string set:
0.011, 0.013, 0.022, 0.032, 0.047, 0.059
These are for acoustic steel strings - an electric set would be lighter. Absolutely no idea how nylons would stack up or even if it's possible - one of the luthier members here may be able to help. Actually, the top string was always "wrong" as it wasn't possible to achieve the necessary high "B". Maybe technology has caught up ... ?
Fripp used to run courses (back in the 80s) - not sure if they still exist but google should be able to help there.