This Guy Teaches Us Everything We Need To Know About Metal Screams [VIDEO]

I'm on my way to being the next big metal singer, thanks to this handy dandy tutorial! 

Ok, so I tried all of these and I don't think I will ever get my voice back ever in life. How do metal singers (real metal singers) do it! My throat is on FIRE! I still have just enough voice left to laugh though. There's always enough voice to laugh.