Jay-Z and Eminem's first of two nights at Yankee Stadium was last night, and like the duo's shows in Detroit, they brought out a shitload of guests. Jay-Z's were cooler than Em's (B.o.B.?), as he brought out Kanye West to join him on the remix of "Power" and "Monster," aka the Kanye song that features Bon Iver. "Monster" is the bigger highlight, since it's Kanye and Jay on some vintage we the best shit, and it's the first song I've heard that features Nicki Minaj that isn't especially ruined by her appearance. Watch it above. You can go to Stereogum to hear Coldplay's Chris Martin help Jay on "Lost" and "Heart of the City."