Is it justifiable to compare the two? I've always just assumed people saw the Classical influence in Metal but than a friend of mine said he never understood it the comparison. He mentioned that band with keyboards like Nightwish definately have some Classical but Metal as a whole is still mostly rock. I mentioned Dream Theater too and he said they have more Jazz influence and almost no Classical. Now I'm confused. Maybe our interpretations of each is completely different. Can someone that knows genres give me a breakdown?