Ariana Grande's Manchester Concert Is On: 'We Must Not Be Afraid'

Even after a terror attack on and around London Bridge Saturday night left seven dead and almost 50 wounded, singer Ariana Grande has vowed her One Love Manchester charity concert will go on as planned Sunday evening.

People magazine reports Grande's manager Scooter Braun said in a statement, "We must not be afraid, and in tribute to all those affected here and around the world, we will bring our voices together and sing loudly. I am pleased to say we have the full support of Greater Manchester police and the government and are assured the safety of all those attending is the highest priority."

Manchester One Love is in honor of the 22 people killed by a suicide bomber outside an Ariana Grande concert in the city less than two weeks ago. All proceeds will benefit survivors and victims' families.

Artists expected to appear include Justin Bieber, Miley Cyrus, Katy Perry, Coldplay, Usher and Take That, with surprises rumored.

Braun said, "All artists involved have been unwavering in their support this morning and are determined to carry on with the show. We ask the strong city of Manchester and the world to join us in making a statement that hatred and fear will never win. Today we stand together."

Security was tight but the mood was festive as fans began arriving for the show at Emirates Old Trafford Cricket Ground in Manchester.

Grande herself said, in announcing the gig, "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."

At the concert's soundcheck Sunday, Ariana was pictured in a One Love Manchester sweatshirt alongside British group Take That in a tweet posted by Take That member Gary Barlow: