It looks like Hannibal Buress is having a great time at SXSW. On Monday night, the comedian offered to join a band on keyboard, and he ended up playing with Slime Girls, a chiptune band from Los Angeles. He also showed up at an A.V. Club showcase that featured the art-rapper Open Mike Eagle. Buress and Open Mike Eagle are old comrades, as Buress starred in his 'Ziggy Starfish (Anti-Anxiety Raps)' video and then featured him on his Comedy Central show. Buress jumped on stage and did his verse from 'Doug Stamper (Advice Song),' a track from Open Mike Eagle’s 2014 album Dark Comedy.