` :The ``concert-going activity of the conspicuous consumer of musical culture `` was still on the popular, accessible side of things. Audiences for serialist music were conspicuous by their absence, if I have read things right.  :The piece which most closely supports ``two things, and two things only`` is  ::``the unprecedented divergence between contemporary serious music and its listeners, on the one hand, and traditional music and its following, on the other.``  :although numerous musical traditions exist beyond the subset mentioned by Babbitt, so ``bisection`` is still dubious. On the article page,  I've put it in terms of ``isolation`` and ``divergence,`` which hews closer to what he wrote. __   `