Fresh in the mind of everyone who attended Radio 1's Big Weekend was the attack at Ariana Grande's concert at the Manchester Arena on 22 May. All weekend performers and fans paid tribute to those affected and spoke of the power of music to unite us all...
Zara Larsson made a heartfelt speech
"Music doesn't have a religion," said Zara, who opened the festival, "it doesn't have a country, or an ethnicity. It's something that we do and it unites us all."
Christina sang a few lines of Ariana's Greedy
Also, Christina said: Pop music should be "about empowerment" and a "safe space".
Emeli Sandé: "Use your voice to change the world"
Emeli played against a backdrop of a huge heart with Manchester written in the middle.
Some fans wore black and white ribbons for Manchester
Kings of Leon dedicated Use Somebody to the city
Each day, there was a minute's silence to remember those affected by the attacks
Imagine Dragons' Dan Reynolds paid tribute, too
Saturday's headliner Katy Perry dedicated Part of Me to Manchester
Katy said: "I think we are extremely brave. We are all in this together, aren't we? We will still dance and we will still make music. This next one goes out to Manchester. It is for all the people who know what it means for music to touch a community."
And when she sang the song, fans and police hugged: