Peas headline BBC underage gig
Black Eyed Peas headlined this year's BBC Switch Live gig at London's Hammersmith Apollo (8 November).
The afternoon event, exclusively for 14 to 17-year-olds, also saw performances from Alexandra Burke, N-Dubz and Pixie Lott.
JLS also played live as they celebrated their second number 1 single Everybody In Love.
4,000 teenagers watched as The Saturdays and Shaheen Jafargholi completed the line up at the event which was co-hosted by Girls Aloud's Kimberley Walsh, alongside Radio 1 DJs Annie Mac and Nick Grimshaw.
Black Eyed Peas were backed by a laser light show and DJ played a set which included hits Boom Boom Pow and Meet Me Halfway.
The Los Angeles pop band later in the evening appeared on The X Factor.
Speaking backstage JLS's Aston addressed tabloid rumours suggesting he is in a relationship with X Factor contestant Stacey Solomon. He said: "She's very cute - I've only met the girl once and she was a nice girl. Not really, 'Watch this space'."
Former X Factor winner Alexandra Burke played a short set which included chart topping songs Bad Boys and Hallelujah.
Other highlights included a performance from Swansea's Shaheen Jafargholi, who sang a cover of Bill Withers' Lean On Me.
He left the event to complete his history homework as he's still attending school.
"It's a report on each of Henry's six wives," he explained.
Last year's event saw performances Fall Out Boy, McFly and Ne-Yo.