It isn't just metal, of course. That was my failure in the original draft of this post. This failure will get its hooks into my skin and drag me down to hell. It's the right kind of *heavy* applied to any music but not all heavy music is created equal and there are only certain kinds of heavy music whose rhythm *feels* like that pull that makes you shake your arms about the place or rock your head back and forth from side to side.
Exploding through the front of your skull with a cataclysmic *echoing* sound