“Emotional Robbie Williams dedicates ‘Angels’ to Manchester terror attack victims, breaks down, 50,000 finish it for him. Everyone now crying,” Raven wrote.
“[Robbie Williams] literally couldn’t sing ‘Angels’ as he stood there with tears in his eyes,” Spreadbury added. “He let his fans sing it for him! United as 1!”
Directly before that number, Williams changed the lyrics to his 1998 tune “Strong” — encouraging fans to sing along.
“Machester we’re strong / we’re strong / we’re strong / We’re still singing our song / our song / our song” the lyrics red, also seen in video posted by Rowson.
The concert was the first stop on Williams’ Heavy Entertainment Show Tour. Afterwards, the singer posted a touching photo to Twitter of himself on stage — a rainbow forming over the stadium — with the simple caption “Manchester.”
Williams is expected to join his Take That bandmates on Sunday for Grande‘s “One Love Manchester” benefit concert — which aims to raise money for victims of the attack, including the over 100 people injured.
Joining them are artists like Coldplay, Miley Cyrus, Justin Bieber, Katy Perry, Pharrell Williams, Usher, Niall Horan, and The Black Eyed Peas.
The concert will be available to watch on several online platforms, including on the main Twitter site as well as on Grande’s YouTube and Facebook pages.
This story originally appeared on PEOPLE.com.