Another 'Stranger Things' actor has introduced his band to the world. Joe Keery, who plays Steve Harrington on the hit Netflix show, had a band called Post Animal before filming the show. Finn Wolfhard, who plays Mike Wheeler, is in a band called Calpurnia. Now, Gaten Matarazzo, who plays Dustin, revealed that he's in a six-piece New Jersey band called Work In Progress. The group recently shared a low-quality video to their Instagram of them performing Pearl Jam?s ?Porch.