Post Malone began his music career in a heavy metal band and though he's enjoyed huge success in hip hop, it looks like he's getting nostalgic. In a smokey, shirtless Karaoke session Posty and Fossils frontman, Dustin Payseur, screamed their way through Pantera's 1992 hit “Walk.”  Scroll through to the second slide to see him in action.

Post Malone has been revisiting his roots quite a lot recently. Last year he brought out Black Sabbath rocker Ozzy Osbourne on two separate occasions to perform “Take What You Want,” which appears on his Hollywood’s Bleeding album. Watch the performance here.