Giorgos Cheliotis, assistant professor of Communications and New Media at the National University of Singapore done one of the, if not the, first network analysis and network visualization of a remix community, based on the ccMixter.

He writes:

One of the visualizations, consisting of all uploaded audio tracks that have been remixed and all remixes thereof, is shown below. I was very surprised by the structure, density and connectedness of the resulting network. I was expecting to see a more weakly connected set of “islands of common interest”, as defined by genre, friendships or location. Instead, before we even go into deeper analysis, the figure suggests that the creative reuse of cultural content (such as enabled by licenses like Creative Commons) leads to a very high degree of cross-pollination across authors and across works, forming a dense network of greatly enhanced collaboration and creativity through open sharing and reuse. We have posted a working paper and more cool hi-res visuals on the Participatory Media Lab wiki.

This seems to suggest that cultural -- or at least musical -- styles are becoming ever more fluid as the range of source is becoming ever more wide.