Here's How Metallica and Lady Gaga's Grammy Performance SHOULD'VE Sounded

Metallica and Lady Gaga's Grammy performance was disaster thanks to James' mic not working.

The video of the dress rehearsal has come out and it shows just how good it could've been.

Metallica later said that Lady Gaga would be welcome to join them on stage anytime. So who knows, maybe we'll see them team up again now that we know that work well together. 



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