A crowd of 65,000 Green Day fans were brought together with a giant sing-along to Queen's hit song, 'Bohemian Rhapsody'.
The video was shot from behind Tre Cool's drum kit, and has gone viral after being posted to Green Day's YouTube channel.
It shows the crowd at London's Hyde Park waiting for the band to take the stage, when the song came on over the PA system.
The crowd then joined together in song, laughing and clapping, before head-banging to Brian May's incendiary guitar solo.
It's a moment that has drawn applause from people who have seen the clip on social media.
"Only Queen can rock an entire stadium without even being there," one YouTube commenter wrote.
Released in 1975, 'Bohemian Rhapsody' is one of Queen's most popular songs and is often placed on lists as one of the greatest modern songs of all time.