One of the most emotional moments came when the pupils of Parrs Wood High School performed Grande's "My Everything" with the singer.
Halfway through performing, Grande joined the choir on stage, and 12-year-old soloist Natasha Seth cried not long after.
And it was a very emotional moment.
And then they consoled each other.
And at the end of the song, they hugged.
Many people said they were in tears.
And many people in the audience were crying too.