Bruce Springsteen and Paul McCartney had their microphones abruptly cut off in London's Hyde Park Saturday night after Springsteen's show ran past the allotted time.
Springsteen, who performed 29 songs, had begun the concert around 7:30 PM and was scheduled to go on until 10:30 PM.
But, with the show already 10 minutes past its deadline at 10:40 PM when the singer called McCartney to the stage to sing a couple of Beatles hits, organizers promptly cut off the duo's mics in the middle of the song.
The singers attempted to thank the crowd, but they couldn't be heard over the drowning boos of over 75,000 concertgoers.
Organizers later admitted they cut the power because they wanted to stick to their license for the event after landing in some trouble with residents for previous outdoor events.
"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 authorities in the interest of the public's health and safety," they said.
But Steven Van Zandt, the lead guitarist for Springsteen's E Street Band, didn't understand the big deal a few minutes would've made.
"One of the great gigs ever in my opinion. But seriously, when did England become a police state?” he asked on Twitter.
"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?"