The concert has raised more than two million Pounds for victims.
Here are some of the most lovely moments, in case you missed it.
"Adam, aged 15, lost his friend Olivia and when we went to visit him he asked me to pass on one message, and he said "hey Scooter, don't go forward in anger, love spreads". "We were there in Manchester (arena) as well, I was hit".
One of the most powerful moments was when the Parrs Wood High School Choir performed Grande's "My Everything" with the singer.
"I love you Manchester", she yelled to the crowd.
While Grande performed several times throughout the benefit show, it was her closing number that projected a strong message of solidarity and compassion for all those affected by the May terrorist attack.
Grande performed throughout the show, singing her hits from "Side to Side" to "Break Free".
Ariana joined the band in place of Fergie as the band belted out their 2003 hit single, Where Is The Love. Variety reports that the BBC One aired the concert live and garnered a huge audience. "Well, the fantastic news is we've already raised around 7 million pounds [$9 million]", chief executive Mike Adamson told the Associated Press.
"(God) loves you and he's here for you. Put both hands up to honour those people right now. "All we feel here tonight is love, resilience, positivity".
Ariana addressed the latest atrocity during the show, saying, "Manchester, before we go any further I'd like to thank you from the bottom of my heart I love you so so much".
Ariana closed the show with a stunning performance of Somewhere Over The Rainbow, a song that brought tears to the eyes of many in the audience and the singer herself. While their performances were unforgettable, their words hold just as much power, especially coming 24 hours after the London terrorist attack.
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