Jay Z & Chris Martin Ride the Tube to O2 Arena Concert

Jay Z stands against the wall while waiting to ride the Tube to his concert at the O2 Arena on Saturday night (October 12) in London, England.

The 43-year-old rapper was joined by his good pals Chris Martin, Timbaland, and an entourage of guys.

PHOTOS: Check out the latest pics of Jay Z

During the show, Chris and Timbaland took the stage with Jay to perform his song “Heart of the City (Ain’t No Love).”

Jay Z is bringing the Magna Carter World Tour back to the U.S. with his first show in St. Paul, MN on Nov. 30!

Click inside to see a video snippet of the performance…