There's the old saying, "when in Rome, do as the Romans." Well, I guess if you're in Detroit performing live in concert then you should do as the Detroitites. Since Kelly Clarkson was in Detroit at the DTE Energy Music Theatre, and that's where Eminem is from, it was only fitting that Kelly Clarkson covered one of his songs. Hey, if Taylor Swift can do it, why not Kelly Clarkson?