We had Nas co-signing Jon Conner, Jay-Z co-signing J. Cole, Dre co-signing Kendrick Lamar, who'd I miss?
I guess you could count Eminem co-signing Slaughterhous, too. Although the Slaughterhouse emcees are far from new, nor up and coming, but they've definitely been catapulled to the forefront by a veteran emcee in the game.










