Photo by “@GreasyLake”:https://twitter.com/GreasyLake/status/224281147683774464/photo/1

Organizers of London’s Hard Rock Calling festival cut short a legendary collaboration last night between Sir Paul McCartney and Bruce Springsteen, over fears of defying the sound curfew at London’s Hyde Park. Springsteen invited McCartney to the stage at the tail end of his set for a pair of Beatles classics, “Saw Her Standing There” and “Twist and Shout,” however the historical moment ended abruptly when their microphones were silenced before the latter song was finished.

Following the performance, the E Street Band’s Steven Van Zandt reflected on the incident through his Twitter account.

“One of the great gigs ever in my opinion. But seriously, when did England become a police state? We break curfews in every country but only English cops needs to “punish us” by not letting us leave until the entire crowd goes. Is there just too much fun in the world? We would have been off by 11 if we’d done one more. On a Saturday night! Who were we disturbing? The cops got nothing more important to do? How about they go catch some criminals instead of fucking with 80,000 people having a good time? 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!”

Concert organizer Live Nation issued a statement regarding the incident, saying the situation was unfortunate but that the curfew is “in the interest of the public’s health and safety.”

Earlier in the evening, Springsteen also welcomed Rage Against The Machine guitarist Tom Morello to the stage as well as CCR frontman John Fogerty.

Watch video of the legendary collaboration below.