Music Composers Unite!
I found this floating around on the internet http://www.eastern-piano.com
Very good move, covering some quite interesting material. A bit of a "verbose" take on the improvisations, but still, of great quality. I do wish it covered some theoretical knowledge as well, it would make it much more informative for those that can't read the greek books available on the subject, and offer a piano specific prespective on the traditional greek/eastern modes. unless he is working on it and I missed it.