Finn Wolfhard, the teenage actor who plays Mike Wheeler in Netflix’s unstoppable ’80s nostalgia delivery system Stranger Things, has developed a busy side hustle as a rock ‘n’ roller. He’s covered Nirvana in a home video and New Order at a big benefit concert. He’s also developed a relationship with some of his rock heroes, like when he starred in a PUP video and spoke on their behalf at Canada’s Polaris Prize ceremony. Now it seems Wolfhard has befriended another of his favorite Canuck musicians: Mac DeMarco, whose “Salad Days” Wolfhard also covered last fall. Natalia Dyer, who plays Wolfhard’s TV sister Nancy Wheeler, posted Instagram footage of Wolfhard performing on stage with DeMarco Saturday night at The Tabernacle in Atlanta. Watch “this lil monster shredding” below, followed by a stage dive from DeMarco.