The actual musicians are turned into simulations on MTV which essentially snuff out their potential resistance to the dominant categories. They no longer have a specific historical context through which they arose. In this context, the art was created as an expression of resistance to the feeling of domination in urban life. When white suburban kids see the videos, they have no understanding of the actual situational context- the videos are just images on the screen like all the others images on the screen that they see everyday. By removing the context, MTV removes all resistant meaning.
Pop music becomes a place of one-dimensionality.
In the world of hyperreality, the lines between dominance and resistance, between high and low are collapsing. There is finally no distinction. There is a unification of opposition. Pop music becomes reified.