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Well, here's something we didn't expect.
Metallica lead singer James Hetfield recently revealed to Kerrang!, "Are we Beliebers? Yes."
Drummer Lars Ulrich added, "Is it possible to have respect for him without being a Belieber? I think the kid's really talented and obviously to go through what he's going through at that early age must be a mindf--k. So the fact that he still goes out there and does it, I admire that and I think he's super talented, so I guess I am kind of a Belieber. If he likes 'One', and Liam Gallagher likes him, OK, there you go."