She kicked off her performance with the upbeat "Be Alright", and followed up with "Break Free". "Let no one take that away from you", she said.
Grande canceled upcoming shows in London and Switzerland to prepare for Sunday's "One Love Manchester" concert.
Many in the crowd were in tears as Grande sang with a choir from Parrs Wood High School.
Grande thanked those in attendance.
Ariana attempted to gloss over the mishap, saying: "Manchester, I love you so, so much".
"She left 5 minutes early because she was exhausted", Laura said of her daughter, who was dressed in an Ariana Grande t-shirt.
She joined Coldplay to perform Oasis hit Don't Look Back In Anger, recalling how city centre crowds had spontaneously burst into a rendition of the song in the days after the Manchester bombing. "Everybody say, 'We honor you, and we love you'". "Would you agree that love always wins?"
"Manchester, your bravery is our hope", Braun said.
"We had a totally different show planned and had a rehearsal but changed everything. We love you, we're with you, all of us are with you guys - the whole world is watching".
A third fan said that Sunday's concert would be "really emotional".
Durant not fussed by Cleveland's in-your-face defence
"It might be an adjustment for me, but it's for the betterment of the team and I am willing to do it", he told reporters. The Cavaliers , after losing Game 1 , are not going to hit the panic button so early. "But that's what stands out".
Sporting a Justin Bieber Purpose hoodie, Williams replaced the chorus lyrics of his hit "Strong" with the words, "Manchester we're strong, we're strong, we're strong".
"I don't feel or smell or hear or see any fear in this building".
More than 50,000 crowded into Emirates Old Trafford Cricket Ground to watch Grande headline the benefit.
Tonight, some of the biggest and best pop stars headed to Manchester for a benefit concert which is expected to raise at least £2m for the victims of the Ariana Grande Manchester Arena terror attack and the families who were affected.
The concert comes the day after attackers targeted the heart of London, killing seven people.
Many music fans started lining up for the concert hours ahead of time, and security for the three-hour show that sold out within 20 minutes was exceptionally tight.
She shared some photos of the visits on her social media account.
The Guardian reported that Lily was released from the hospital in time to attend the benefit concert.
The 23-year-old singer's poignant speech also paid tribute to the victims and families of the terror attack at Ariana Grande's Manchester, England concert on May 22.