AceShowbiz -

We're just days away from Ariana Grande's benefit concert and three more acts have been announced to take the stage as performers at the star-studded show. Little Mix, Robbie Williams and Black Eyed Peas are confirmed to join Justin Bieber, Katy Perry, Miley Cyrus, Coldplay, Niall Horan, Take That, Pharrell Williams and Usher at the gig called "One Love Manchester".

As previously reported, Ariana will return to Manchester to hold a concert to raise money for the victims and their families affected by the terror attack at her show on May 22. Melvin Benn, one of the upcoming event's organizers, confirmed that the show would have "more than double the security personnel that would normally be at a concert." He also hinted that it might feature some "surprise guests."

Tickets for the benefit event went on sale on Thursday, June 1 and reportedly sold out within six minutes. "Ticketmaster was unsurprisingly met with remarkable demand for 'One Love Manchester' tickets we had on sale this morning--140,000 fans were on the website and out call center was buzzing," Ticketmaster said.

"One Love Manchester" will air live from Emirates Old Trafford Cricket Ground on BBC on Sunday, June 4. BBC director general Lord Hall previously said, "Bringing the nation together, the BBC is proud to be broadcasting what will undoubtedly be a moving tribute to the victims and their loved ones."

Ariana previously shared in a statement, "Music is meant to heal us, to bring us together, to make us happy. So that is what it will continue to do for us. We will continue to honor 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."