A many of my classical resources will be of the non guitar variety. This is because this lends a certain variation in ones aural perception and broadens, shall we say, the mind. Man, I sound snobbish. LOL. Anyway, a wholenoter wrote a lesson on the 12 tone matrix. This resource will give you the aural example to his lesson. To really understand serialism you must listen. Which is one of my articles. Buckle your ears up.