Music always has to be understood as wielding historical efficacy.  What was Wagner's music doing? And Machaut's?  What are rock and rap doing?  The answers to the questions are not all the same - but they all pertain to the social bond.   

It is obvious enough that rock as such (including techno, rap, dub and any libidinally charged music distributed as recordings primarily etc) effectuates the dissolution of the Urizenic power structure.  But if it is to do more than simply service the Varizenic structure, i.e. be subsumed by the capitalist feedback loop, it has to make contact with musical forms outside of its orbit - primarily forms that make up the Western classical tradition