The video above provides just a tantalizing sample of what went down on the final night of the Illmore House at SXSW 2015, sponsored by Illroots and Beats. By hitting play, you'll hear about the SXSW experience firsthand from rappers OG Maco and Vince Staples, as well as Def Jam A&R man Randall "Sickamore" Medford, but the highlight of the video is the unbelievable a cappella J. Cole drops for the final-night crowd.

The Illmore was live from Thursday, March 19, to Saturday, March 21, and saw the game's best hip-hop artists, both veterans and up-and-comers, take the stage. Just some of those to appear during Illmore: Chance The Rapper, Funkmaster Flex, Fetty Wap, iLOVEMAKONNEN, Big Sean, Mike WiLL MadeIt, Eskeerdo, Rae Sremmurd, Future, Ryn Weaver, and G-Eazy. We highly suggest watching now before the FOMO overwhelms you.