Panic! at the Disco Joined by 'Stranger Things' Star During MSG Show

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Noah Schnapp and Panic! at the Disco singer Brendon Urie perform at Madison Square Garden on March 2, 2017 in New York City. 

Panic! at the Disco reunited with Stranger Things star Noah Schnapp during their Madison Square Garden show on Thursday night (March 2). The actor -- who starred in the band's "L.A. Devotee" video and plays Will Byers on the Netflix series -- hopped on stage to sing along to the tune at the show. Schnapp was clearly jacked for the honor, hopping around next to Panic! singer Brendon Urie and getting a pat on the head and a big hug from the frontman as he exited the stage.

The whole crew also posed for some pictures after the show.

Schnapp also shared a pic from just before his big moment. "I look like I just saw the demogorgon," he joked in character.

When the "L.A. Devotee" video dropped in September Schnapp tweeted, "count me in @brendonurie for your concert in NY!"