Saturday night in London, The Boss and The E-Street Band were cranking out their usual repertoire of fist-pumping anthems in their usual lengthy way. If you're a fan of Bruce, you're well aware of the length of his shows; 3+ hours at times, and if they're having a particularly good time, even longer.

That's what happened in Hyde Park this past weekend as Springsteen and crew were power-rocking past Hyde Park's 'noise-curfew' of 10:30pm.  They were about half an hour into the curfew, when Springsteen welcomed none other than Sir Paul McCartney on stage for a couple of quick tunes. As Macca and The Boss belted out I Saw Her Standing There and Twist And Shout, the crowd was alternately in awe and in a frenzy over the unannounced collaboration.

However, just as the duo were about to say their thanks to the crowd, they themselves were stunned and in awe by the apparent lack of sound coming from their microphones. Apparently concert officials, in a weak flexing of authoritarianism muscle literally pulled the plug on the pair.

A statement on the concert's promoter Live Nation's website after the debacle was coyly apologetic;

"It was unfortunate that the three hour-plus performance by Bruce Springsteen was stopped right at the very end but the curfew is laid down by the authorities in the interest of the public's health and safety."

Hyde Park is bordered by hundreds of London's most well-to-do residents, who have often clashed with promoters and concert goers over the noise, crowds and length of the musical events.

Little Steven (Steven Van Zandt, Springsteen's guitarist) fired off a series of Tweets afterwards, but the MOST entertaining one said;

"English cops may be the only individuals left on earth that wouldn't want to hear one more from Bruce Springsteen and Paul McCartney! I'm sorry but I have to be honest I'm pissed. Like I said, it didn't ruin the great night. But when I'm jamming with McCartney don't bug me!"