LOS ANGELES, CA - FEBRUARY 12:  Musicians James Hetfield of Metallica and Lady Gaga during The 59th GRAMMY Awards at STAPLES
Christopher Polk/Getty Images for NARAS

Metallica and Lady Gaga's GRAMMYs collaborative performance on Sunday should've been a co-headlining moment, but technical difficulties made it more of a "Gaga featuring Metallica" moment. (Good thing she just headlined the halftime show of the biggest televised event in the galaxy.)

But the "Metal Militia" dudes are still all good vibes when it comes to Mother Monster. Drummer Lars Ulrich tells Rolling Stone's Jason Newman he sees Gaga as the "quintessential perfect fifth member of this band." He says they've already "started fast-forwarding to the next chapter when we can do more of this", adding that it's "about as organic and authentic" a collaboration as the band has ever done. (Sorry, any stray Lulu fans out there.) "We're just getting started," Ulrich promises.

What attracts Metallica to one of the all-time iconic chameleons of pop music? "Her voice, her attitude, her outlook on everything is so awesome," Ulrich says, and the fact that "she just has the spirit of hard rock and metal flowing through her veins. It comes really easy for her."

Metallica are in the midst of their WorldWired Tour, which announced a big batch of North American dates yesterday. Gaga announced her Joanne World Tour right after the Super Bowl.

Next, watch an old school Fuse interview with Lady Gaga, long before she ever headbanged with James Hetfield & Co.: