Thank You 2 by MRK SX U.S.A (Detroit) MRK SX has had his fair share of exposure, & has been co-signed by some of the most elite rap artists including Crooked I, Royce Da 5’9”, Killer Mike, Obie Trice, Swifty McVay & Kuniva from D-12, Ras Kass, Yukmouth, Arrested Development and more. Artist don’t just go around co-signing any unsigned artist, so what is it that makes MRK SX so special? Press play