It's been a controversial week on the dubstep front. First, there's a libertarian dubstep guy, and then we had to deal with a spin-off called “fratstep.” Now Korn is saying they invented dubstep?!

Experimentation in the heavy metal world can sometimes be a dicey or even thorny proposition. Unlike the realms of pop or hip-hop, where fans want their artists to expand and try new things, rock and ...