By Joey Nolfi
February 12, 2017 at 12:51 PM EST
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Credit: Kevin Winter/WireImage

This Sunday, metal meets monster.

Ahead of her scheduled performance alongside Metallica at the upcoming Grammy Awards, Lady Gaga tweeted a photo of herself posing with the rockers at what appears to be a rehearsal for the previously announced duet.

“See you at the Grammys,” Gaga tweeted Saturday evening, adding the hashtag #MetalliGa along with the butterfly and fire emojis, seemingly referencing the band’s 2016 tune “Moth Into Flame.”

News of the mega collaboration broke Monday night after CBS aired a teaser commercial referencing both acts. Earlier this week, Gaga revealed Bradley Cooper, her costar in and director of the 2018 big screen adaptation of A Star Is Born, played a major part in orchestrating the gig.

I was at Bradley [Cooper]’s house with Lars [Ulrich] and we were just hanging out. He’s amazing,” Gaga, referencing Metallica’s co-founder and drummer, told Apple Music’s Zane Lowe during a Wednesday interview. “I went to see them live, I’ve seen them a couple times live, but I saw them recently… and we were watching the show and I’ll tell you something, those guys play better than they’ve played in their whole lives.”

Watch the 59th Grammy Awards telecast Sunday at 8 p.m. ET on CBS for the full performance.