Post Malone brought out the big guns for his “Bud Light Seltzer Sessions” on New Year’s Eve. The encore was AMAZING! He brought out Chad Smith and Chris Chaney joined for a rousing cover of Alice in Chains’ “Rooster”. Posty showed off some impressive rock pipes as he channeled a bit of Layne Staley while delivering an emotionally charged rendition of a classic. It was AWESOME!