Peas headline BBC underage gig

Black Eyed Peas played a short set which included Boom Boom Pow and Meet Me Halfway

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.

Short set

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.

See all the photos from Switch 2009

The Los Angeles pop band later in the evening appeared on The X Factor.

Alexandra Burke played a couple of songs including previous number 1 Bad Boys

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.

See video highlights and interviews from Switch Live 2009