The track�off Lupe's upcoming album, Tetsuo and Youth, due out in 2014�features him reminiscing about the good old days of hip-hop, you know that time before Pro Tools.

He shouts out The Fat Boys, Melle Mel, pre-Law & Order Ice-T and late '80s, early '90s rap, giving words of wisdom to the kids today: "It takes a long time and it happens so fast to realize your future is somebody else's past."

Sheeran sweetly chimes in to sing, "As long I'm here/As long as you love me/Give me that old school love right now," over a twinkly hook that sweetens up the Chi-town rapper's lovefest.

Lupe is gearing up for his Tetsuo and Youth Preview Tour, which will kick off on November 2 in Atlanta, where he'll preview new music and play hits off his previous four albums.