More on the female/male metal vocalist thing. I honestly don't think that a female could ever sound this good:
This is one of my favorite Sotajumala songs, originally published in 2005 on a Sotajumala/Torture Killer split. Instrumentally awesome and clear, perfectly timed vocals that show a great deal of variety. And DEPTH.
There is no way that a girl can get that sort of depth into her voice. No. Way. Men are able to get the sort of devilish sound to their voice.. When girls try it, they often end up sounding like extremely annoying horny witches. (There are exceptions of course.)
I have also thought that it might be a biological thing that I prefer male (raw) vocals to female ones because I'm a heterosexual female. Makes sense..?