Rap-Up: Hip-hop royalty graced the stage at Hot 97 Summer Jam. Following sets from Big Sean, Young Jeezy, J. Cole, and Waka Flocka Flame, Nas made a surprise appearance at MetLife Stadium in East Rutherford, New Jersey. “We back up on this motherfu**in’ stage like we never left,” said the Queens MC, who pleased the hometown crowd with hits from his […]