I heard it harkens back to their older, thrash days of good. Realistically, it's just a cheap attempt to regain their original fan base and fans of their GOOD work since their newer stuff has been so bad that even the mainstream fans have abandoned them. It's just too bad it's working. If metal fans rejected them wholesale, Metallica would be like a child stuck in a well, except nobody cares. That would be incredibly hilarious.

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