In the wake of the suicide bomb attack at an Ariana Grande show at the Manchester Arena, which has left 22 dead, musicians have taken to Twitter to express their sadness.
From Harry Styles through to Bruno Mars, there has been a constant outpouring of sorrow across social media since the attacks were reported late Monday night.
Spectators described hearing an explosion just after the show ended, and then mass panic as people scrambled for the doors.
Andy Holey, who was waiting to pick up his wife and daughter told the BBC: "As I was waiting, an explosion went off and it threw me about 30 feet from one set of doors to the other set of doors.
"When I got up I saw bodies lying on the ground. My first thought was to go into the arena to try to find my family.
"When I couldn't find them, I went outside with the police and fire and looked through some of the bodies to try and find my wife and daughter."
Our thoughts are with all those affected.