Absolutely incredible music genre map

[Quhet]

Not really sure how to describe these. So have copied in the description from the website:
"This is an ongoing attempt at an algorithmically-generated, readability-adjusted scatter-plot of the musical genre-space, based on data tracked and analyzed for 1387 genres by The Echo Nest. The calibration is fuzzy, but in general down is more organic, up is more mechanical and electric; left is denser and more atmospheric, right is spikier and bouncier.
Click anything to hear an example of what it sounds like.
Click the » on a genre to see a map of its artists."

http://everynoise.com/engenremap.html

http://static.echonest.com/playlist/moms/ - map of musical genres

Utterly absorbing