U2 began the European leg of their Joshua Tree tour in London at the weekend, playing two gigs at Twickenham on Saturday and Sunday.
As you might know, Noel Gallagher's High Flying Birds are supporting Bono and the boys on these dates, and they took the opportunity to invite Gallagher on stage to sing the song that has captured the mood of many over the last few months, since the terrorist attack in Manchester in May.
He played 'Don't Look Back in Anger' and also made an appearance on U2's Instagram Stories, showing fans around his dressing room (which you can only see if you follow U2 on Instagram).
Watch their performance below:
