Metallica Call Eddie's "Master of Puppets" Solo in "Stranger Things" "Extremely Well Done"

Was Eddie Munson's "Stranger Things" guitar solo the "most metal ever"? Metallica thinks so! The iconic heavy-metal band weighed in on the use of their 1986 hit "Master of Puppets" in an important scene of "Stranger Things" season four, volume two, calling it "so extremely well done."

"The way The Duffer Brothers have incorporated music into 'Stranger Things' has always been next level, so we were beyond psyched for them to not only include 'Master of Puppets' in the show, but to have such a pivotal scene built around it," the band wrote on Instagram after the final two episodes of season four dropped on July 1. "We were all stoked to see the final result and when we did we were totally blown away . . . it's so extremely well done, so much so, that some folks were able to guess the song just by seeing a few seconds of Joseph Quinn's hands in the trailer!! How crazy cool is that?"

In the scene, season four new addition Eddie (Joseph Quinn) distracts the bat-like creatures that protect Vecna in the Upside Down in order to allow his classmates to get into the otherworldly villain's home. Eddie plays an incredible guitar solo from "Master of Puppets" that draws all the bats away from Vecna's lair to himself and Dustin Henderson (Gaten Matarazzo), posted up on top of the Munson trailer home. Then they fight the creepy creatures off using their makeshift weaponry. Unfortunately, the performance is the beginning of the end for Eddie, who sacrifices himself to further distract and draw away the winged creatures.

Metallica said of their inclusion in the big moment, "It's an incredible honor to be such a big part of Eddie's journey and to once again be keeping company with all of the other amazing artists featured in the show."

Did Joseph Quinn Really Play Guitar in "Stranger Things"?

Quinn, 29, was actually playing the guitar during the episode nine scene, he's since confirmed - which proved to be quite the feat. "I've played guitar since I was quite young. So, I had the foundations to take most of it," he told Entertainment Tonight. Still, he explained further in an interview with Radio Times, tackling the challenge required practicing "manically for months." "I was trying to be realistic with kind of what I could do," Quinn told the outlet. "Like I've been playing [guitar] since I was a kid but I'm no virtuoso. So I had most of the song down, but for the solo, we had to fly someone, a black belt metal guitarist, in to help with that. The rest of it? I had a stab at it, yeah."

Quinn added, "It was so thrilling to do on the day – me and Gaten [Matarazzo] were on top of the caravan in the middle of the Upside Down playing Metallica. And it was great fun!"