I guess I wasn't the market for the film - I had been reading the comic for ages, and the segments were simply mediocre in comparison. Also, I personally don't like heavy metal music, so ...
I thought it a shame that American squeamishness about nudity meant that a DVD release couldn't include Corben's "Den" animated short as an extra. Heck, someone somewhere must have made a combination of the two.
Nothing about the film has anything to do with heavy metal music, so that doesn't matter.