The attack has confirmed 22 people dead, with over 59 injured. Now, celebrities everywhere are paying tribute.
"I wanted to celebrate with you," he began, "but tonight doesn't feel like a night to celebrate. Last night there was a tragedy in my hometown of Manchester, and I have been left with a hole in my heart."
He even explained that his very first show he attended was in that arena.
"We have a choice, every single day that we wake up, of what we can put into the world, and I ask you to please choose love every single day," he continued.
"I promise that we will be back very soon to Mexico, we will be back with a full show, but tonight, if it's OK with you, we're going to play a small acoustic set. I hope you understand, and I hope you'll join me in a moment of silence for the victims and for the families of the victims in Manchester today. Thank you for understanding. I love you very much."
Crying. Watch his entire speech below: