Singing brothers and an 11-year-old girl were the first two acts to go through to ITV's Britain's Got Talent final.
Richard & Adam, aged 19 and 22, and from Holywell, Wales, topped the public vote after singing their version of Somewhere, from West Side Story.
Arisxandra Libantino was second in the public vote after performing I Have Nothing, by Whitney Houston.
The brothers and 11-year-old were chosen from the first nine contenders of the final 45 in the competition.
During the show, Simon Cowell branded Sir Bruce Forsyth as "Mr Grumpy" after he criticised Britain's Got Talent for featuring children.
The Strictly Come Dancing host was recently said to have claimed that being on the show is an "ordeal" for many children and results in some of them crying.
Sir Bruce said: "I don't think that's entertainment. I don't think they should put children on that are too young."
Cowell praised Arisxandra after she sang, saying: "If you've got it, you've got it, who cares how old you are. It was one of the best performances of the night, and I would like to dedicate this one to Bruce."
Earlier he asked Youth Creation, who are aged seven to 14, if they thought they should be on the show, as somebody "grumpy" had said they should not be, and they shouted out "Yes".
Those who missed out included Martin Healey, 57, from Leeds, who dresses as a vicar to dance with a papier mache nun and 44-year-old Belgian magician Aaron Crow, who fired an arrow to split an apple on the head of co-host Declan Donnelly.