No, you don't really have to do them.
This video is thoroughly hilarious and immensely brutal, but it's also a great reminder of the most beautiful thing about death metal growling:
it doesn't really require talent or much practice. Well, I'll take that back. It's about on the same talent level as knuckle cracking, eye-lid flipping or arm pit farts. Anybody can do it, as long as they're a creepy or damaged enough human being to take a stab at it.
Found on
MetalSucks.net