Invaluable tool

Ive been looking for an app like this for a long time. Ive played guitar for years but havent been able to get into the theory of it all until now. This app makes that all clear and understandable. I noticed the program hasnt been updated in a while -- I really hope it doesnt become abandonware, as it really is an invaluable resource.

Orci about Music Theory by Musicopoulos, v2.6.1