With the release of producer Ski Beatz mixtape yesterday, the official trailer for his project 24-Hour Karate School drops courtesy of Creative Control. Guest artists on the track include Jay Electronica, Curren$y, Mos Def, Jim Jones, Tabi Bonney, Rugz D. Bewler, The Cool Kids, Dame Dash, Stalley, Nikki Wray, Jean Grae and Ras Kass. Take a look and listen.