Jay-Z and Eminem Double Their Tour Dates

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From two, to four! Eminem and Jay-Z initially announced a set of co-headlining dates, one each at Detroit's Comerica Park and Yankee Stadium, last month. Then, after tickets for those two shows went on sale yesterday, another Yankee Stadium and another Comerica date were added. If the amount of shows keep expanding at this exponential rate, Em and Jay might actually end up playing somewhere that's not Detroit or New York. Fingers crossed, rest of America! [Billboard]