DJ Mainstream back to give you another Throwback Thursday, and today I am proud to say I watch this rapper's progression. Now known as Kidd Upstairs, Catastrophic was a possible management signee to my Loyalty X Entertainment company. What put me on to this young Oakland, California rapper? This song here, "Fresher Than Ever", which was off his mixtape Rhyme and Reason. Take a listen, then keep updated with his new music on his official site, KiddUpstairs.com , and follow him on Twitter @KiddUpstairs. Tell him DJ Mainstream sent you.