I found this Landscape of Music a while ago and had some fun with it; perhaps you will as well:

http://www2.research.att.com/~yifanhu/MusicMap/index.html

Be sure to zoom all the way in.

There's a slightly newer version, but I prefer the old one with Reggae Island where Classical Island is now.

For what it's worth, I commute between Aphex Twin and King Tubby all the time and it's really not that distant a journey.