The video for Path was interesting. I've never seen cellos qualify as anything like Metal. Hmm, I may have gotten the instruments wrong...
Anyway, let's see if I can manage to offer up anything you might enjoy:
[a href="http://www.youtube.com/watch?v=M-VgW4Knb5s"]Here's[/a] [a href="http://www.youtube.com/watch?v=naPvZ3pggkI"]some[/a] Blue Man Group. That's all I could find that had quality to it, but if that interests you at all, try looking at some of their other things as well.
And may I recommend some David Bowie? With [a href="http://www.youtube.com/watch?v=GYEOlxcirX0"]as[/a] [a href="http://www.youtube.com/watch?v=O59CD81UAzw"]much[/a] [a href="http://www.youtube.com/watch?v=ueUOTImKp0k&feature=fvw"]as[/a] [a href="http://www.youtube.com/watch?v=muMcWMKPEWQ&feature=related"]his[/a] [a href="http://www.youtube.com/watch?v=LSnXjE66tvQ&feature=related"]sound[/a] [a href="http://www.youtube.com/watch?v=UnTrbvg4wNg"]changes[/a] with any given album or song, there's probably something to interest almost everyone.
I'm not sure if I'm really on the right track with any of the examples.