An all male choir made up of 133 teenagers is one of the biggest acts ever take part in Britain's Got Talent, and will be seen auditioning on tonight's opening episode.
Only Boys Aloud - made up of 14-19 year olds from the Welsh valleys - impress with their group vocals.
Leader Tim explains before they head out on stage: "Only Boys Aloud is a choir for 14-19 year old lads from the South Wales Valley’s. The Valleys are suffering from un-employment and lots of social problems that come out of that un-employment.
"We set up Only Boys Aloud to inspire the boys not only to sing but to do something positive with their lives."
He adds: "We believe passionately in the tradition of male singing in Wales and we wanna make sure the tradition is there in one hundred years’ time."
After their performance the panel are seemingly won over.
Amanda tells them: "Oh my goodness, you brought a lump to my throat and a tear to my eye. I just… I found that really moving. I loved the song choice, well done."
Simon gushed: "I have got a very, very good feeling about you lot. I really, really loved what you did. I’ve never heard that song before but I absolutely love it and I think you guys are amazing."
Tune into Britain's Got Talent 2012 tonight to find out how the judges voted!
Browse pictures from the first Britain's Got Talent episode below...