Jay-Z and Eminem brought their "Home vs. Home" tour to NYC on Monday. While the show was chock full of surprise guest performers, no one expected Coldplay's Chris Martin to take the stage at the hip-hop concert. In addition to singing the hook on "Heart of the City," Martin also performed "Viva La Vida." Kevin Mazur/WireImage.com - September 13, 2010
Jay-Z and Eminem Take Yankee Stadium
The rappers bring their "Home and Home" tour to the Bronx.