U2 and Noel Gallagher perform Don't Look Back In Anger.

U2 and Noel Gallagher perform Don’t Look Back In Anger live during their The Joshua Tree Tour concert in London, England.

Noel Gallagher and his band “High Flying Birds” opened for this leg of The Joshua Tree Tour, and then later accompanied U2 on stage to sing “Don’t Look Back in Anger” as a tribute to the victims of the Manchester attack. The song has become somewhat around the tragedy.

Take a look:

Reportedly, Noel Gallagher has donated all profits from this single to the “We Love Manchester campaign,” which is still raising money for the victims of the Manchester attack that happened in May 2017. Currently, there’s been nearly £2m donated to the cause.

"We are pretty much ready (for the U2 Tour)
The tunes have been given a good polish.
Everyone has been reacquainted.
We have new members!" pic.twitter.com/fZFXeF9oxG

— Noel Gallagher (@NoelGallagher) July 6, 2017

#U2TheJoshuaTree2017 #NGHFBTour pic.twitter.com/J8WPFDp8rb

— Noel Gallagher (@NoelGallagher) July 8, 2017