After the heartbreaking incident that happened during Ariana Grande’s Manchester concert on May 22nd, killing 22 people and injuring many others, the pop singer has decided to put on a benefit concert.

Grande is calling on her celebrity friends to join forces for the concert, dubbed “One Love Manchester,” which will honor the victims and families of the Manchester terrorist attack. The concert will take place on June 4th at Emirates Old Trafford in Manchester.

The lineup has already been announced for the special event, including Justin Bieber, Coldplay, Pharrell Williams, Katy Perry, Usher, Miley Cyrus, Niall Horan and Take That. All proceeds raised will go to the victims and the victims’ families.

The 23-year-old singer posted a heartfelt message on Twitter, telling fans her “heart, prayers and deepest condolences are with the victims of the Manchester attack and their loved ones,” along with a promise to make a return to the “brave city” to put on a benefit concert.

“We will continue in honor of the ones we lost, their loved ones, my fans and all affected by this tragedy. They will be on my mind and in my heart everyday and I will think of them with everything I do for the rest of my life,” said Grande.

Tickets go on sale June 1st and can be purchased here.