well I guess what I'm going to say now is spiritual blah :p
I've been thinking about why we listen to it.. like you said the screaming part might have something to do with the ability to throw away...

hehe, they are heavy metal and you can find them here:
http://www.manowar.com/
Their mission is to show the world "steel", their music is based on the middle-ages and is about armies, sword-clashes...

Whoa music, Classical, Heavy metal are my most favourite. As I find myself listening to it half my time a week. For the rest, I'm quite picky as I like the some of the songs, but because I like one...