Which Metallica song does Eddie Munson play in the Upside Down?

Eddie Munson plays Metallica’s “Master of Puppets” in the Upside Down.

In the season 4 finale, Eddie and Dustin enter the Upside Down as part of a plan to distract the Demobats guarding Vecna’s lair. Eddie performs the song on his electric guitar from the roof of the Upside Down version of his trailer, creating a loud diversion while the others carry out their attack.

The choice fits Eddie’s identity as a metal-loving Hellfire Club leader and gives the sequence a dramatic musical centerpiece. The performance is not merely background music: Eddie deliberately plays the track to draw the creatures away from the group.

“Master of Puppets” originally appeared as the title track of Metallica’s 1986 album. Stranger Things revived interest in the song, and it returned to music charts decades after its release. “One,” “Enter Sandman,” and “For Whom the Bell Tolls” are also Metallica songs, but Eddie does not play them in this scene.