Liam Gallagher was just one of many acts - including Labour leader Jeremy Corbyn - performing at Glastonbury this year, but this might just be the defining performance of his solo career.
After playing a rousing set, Gallagher dismissed his backing band and then spoke briefly about the events in Manchester and Greenfell Tower, before he cracked into an acapella version of Don't Look Back In Anger with the crowd singing along with every word.
Why's this so important, you might ask? Well, aside from the dedication beforehand, Liam Gallagher's never really performed the song live on his own as it's sort of considered to be Noel Gallagher's song - not his.
Regardless, it's quite a moment. Take a look.
Via BBC / Facebook