What do you get when a few dozen mogwai decide to cover Metallica, with White Fang doing backing vocals?
Something not unlike this mp3, by Japanese beatbox artist DOKAKA ... made recently famous off the We ♥ Katamari soundtrack ... his site seems to also contain covers of Led Zeppelin, King Crimson, Nirvana (!!) and others, although the bandwidth is abysmal, so be sure to use a download client with resume, like wget ...
If your attention span is short, fastforward to 4:00 in. ☺