A seriously awesome style of music which is much more difficult (at least for guitar) than normal rock. But I do not see anyone mentioning the band that I think owns heavy metal, Tool. I am a professional violist and I play guitar, and musically, heavy metal is very similar to classical, it takes skill to play and write.
Tool's music is 100 times what any Blink 182 or Simple Plan guitarist can play. And musically speaking, it is, well actual music.
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