The Black Keys helped the Rolling Stones celebrate the last show on their brief 50th anniversary tour last night. The duo hopped onstage at the Prudential Center in Newark, New Jersey, about midway through the set for a cover of the '60s R&B classic 'Who Do You Love.'

The veteran rockers have had a busy month. They played a handful of shows in London and New York (well, New Jersey), inviting special guests to join them onstage. Florence and the Machine's Florence Welch sang 'Gimme Shelter' with the Stones in London. And a few days ago, word leaked that they may be headlining the Coachella music festival in April.

Last night's concert also included performances by Lady Gaga (who helped out on 'Gimme Shelter') and Bruce Springsteen (who joined them for 'Tumbling Dice').

Watch the Black Keys Perform With the Rolling Stones