Watch Pearl Jam and Jay-Z play "99 Problems" together live
Pearl Jam were joined onstage on September 2 by Jay-Z for a version of the rapper's hit single, "99 Problems".
The rockers were headlining the final night of the Made In America Festival in Philadelphia, when the event's famous curator joined them to run through his 2004 single. Click above to watch fan-shot footage of the collaboration between the two massive acts.
Jay-Z headlined the first night of the festival (September 1), a day which also saw sets from Skrillex, Calvin Harris, Passion Pit and D'Angelo. Jay-Z's set also included a pre-recorded message from US President, Barack Obama.
Sunday drew performances from The Hives, current UK chart topper Rita Ora, Santigold, Odd Future and Drake, with Pearl Jam closing the weekender with a 25-song set, which included covers of The Clash's "Know Your Rights", "Love Reign O'er Me" by The Who and Neil Young's "Rockin' In The Free World".
Pearl Jam played:
'Given To Fly'
'Elderly Woman Behind The Counter In A Small Town'
'Do The Evolution'
'Know Your Rights'
'Love, Reign O'er Me'
'Spin The Black Circle'
'Rockin' In The Free World'