Singer Amy Winehouse has performed at the Mercury Music Awards despite speculation she would pull out.
The band Klaxons has won this year's Mercury Prize for the album Myths of the Near Future.
The 23-year-old, who has made her first public appearance since attending rehab after reports of drug use, sang Love Is A Losing Game at the ceremony.
The group, which is fronted by singer Jamie Reynolds, has only been together for two years after meeting at Glastonbury Festival.
The BBC News website's Ian Youngs, who is at the event in London, said: "She got a very enthusiastic reception from the audience."
The Mercury judges said the trio took them on an "ecstatic musical adventure".
Her album, Back To Black, is third favourite to win the £20,000 prize.
The band ran onto the stage to receive the £20,000 cash prize and told the audience they were "very happy".
Winehouse was accompanied by her father, Mitch, and her husband Blake Fielder-Civil at the event.
Female soloist Bat For Lashes is the favourite to take home the cash prize with 21-year-old Jamie T close behind her.
Eclectic mix
Earlier, Ms Winehouse performed a sound-check at the Grosvenor House Hotel. The BBC's Colin Patterson said she was "joking with the band" and "looked relaxed".
Eleven of the hopefuls are expected to be at the event which will reveal the album of the year.
The Arctic Monkeys, who won the prize last year, will not attend the ceremony as they are currently touring in the US.
Ladbrokes have put them at 16/1 with their contender Favourite Worst Nightmare.
They would become the first act to take the prize on two consecutive occasions with their second album.
MERCURY CONTENDERS Bat For Lashes - Fur and Gold 7/4Jamie T - Panic Prevention 3/1Amy Winehouse - Back To Black 10/3Klaxons - Myths of the Near Future 9/1Maps (pictured) - We Can Create 12/1 Source: LadbrokesJudges face tough choice
Dizzee Rascal, who previously won the award in 2003, is shortlisted again for Maths and English, but is an outside tip on 33/1 along with Leicestershire trio The Young Knives.
The shortlist is an eclectic mix again this year, with classical quintet Basquiat Strings also in the running.
Winehouse also earned a Mercury nomination in 2003 for her debut album Frank.
She has recently cancelled a string of performances and award show appearances.
The star was previously favourite to scoop the award, but in recent weeks her odds have drifted.
"Amy's had a difficult time of it lately, and that's coincided with backers deserting her," said Ladbrokes spokesman Nick Weinberg.
This year's ceremony will be screened on BBC Four at 2100 BST.
