Bruce Springsteen is famous for lengthy, high-energy concert performances that last long after the lights turn on, so the Boss was understandably surprised when Hard Rock Calling concert organizers literally pulled the plug on his duet with Paul McCartney at Hyde Park last summer.
By way of apology, Hard Rock Calling asked Springsteen to headline the performance once again this June. Springsteen agreed, though there's no word whether McCartney will return.