“I’d like to make an announcement that Metallica is now a five-piece.”

Eddie Munson lived to shred another day backstage at Lollapalooza, anyway.

Lead singer James Hetfield immediately shot back, “Thanks for doing it justice.”

Joseph Quinn meets Metallica at a rehearsal for their headlining gig at the Lollapalooza music festival in Chicago

‘Stranger Things’ star Joseph Quinn met Metallica at a rehearsal for their headlining gig at Lollapalooza.Netflix

“It’s all I was listening to for two years,” he said.

“I feel very connected to you guys.”

The feeling was mutual.

Joseph Quinn meets Metallica at a rehearsal for their headlining gig at the Lollapalooza music festival in Chicago

Joseph Quinn and Metallica hang out at a Lollapalooza rehearsal.Netflix

), landing on the Billboard Hot 100 chart and climbing into the top 40.

And beyond that, Hetfield is a longtimeStranger Thingsaficionado.

“I’m a big fan of it, have been since season 1,” he told Quinn.

“My kids and I, it’s been a bonding experience for us.”

After their sit-down chat, the group then invited Quinn to the tuning room for a jam session.

After their session, the band surprised Quinn with a custom B.C.

Stranger Thingsseason 4 is streaming now on Netflix.

Watch Quinn meet Metallica below.