FEVER is the kind of band you want to put on when you're contemplating a slow, deliberately painful murder.
Dark as a fucking dungeon, but delicate enough to allow thought to shine through.
Elements of the Sixties are mixed in with an almost metal-esque drone. Think the Melvins covering the Velvets.
If you can't get a good idea from that description, I highly suggest you go listen to their demo. It's a slow burner, but if you're feeling evil or violent, it will get you through the day.