Satanstoenail
My Larpstyle determines my Derpstyle
Anyway, I think anything can happen in metal. That's what makes it so great; there's so much room for experimentation. I would have despised sampling but I heard a little album called Endtroducing and it totally changed my outlook on the subject. DJ Shadow made what is quite possibly the only pseudo-metal song with only samples and his drum machine. It's quite incredible really. It's called Stem/Long Stem/Transmission 2. It's atmosphere is on par with Black Metal.
Yeah that's an awesome album. There's another track on it called "The Number Song" which samples Cliff Burton's distorted bass intro to "Orion" all the way through the track to great effect.