Hm, well I interpreted the topic more to mean "popular music" as opposed to "classical" or "world" music rather than "pop" as opposed to "art", especially since aphex twin was mentioned on the first page. More "out there" subgenres still come under the broad heading of "pop". Pilorious, everything you've posted is still "classical" (obviously). Whilst it might still technically be "dance music", it's obvious to any listener that those pieces come from a completely different genre to autechre, aphex twin etc. Looking through the rest of the thread I can see that everyone's basically already had this discussion anyway: