Florence and The Machine, Plan B, Leona Lewis and Tinie Tempah have been confirmed for next year's Hackney Weekend event in London.
The event, organised by BBC Radio 1, will take place on the weekend of June 23-24 at Hackney Marshes in London.
The BBC said 100,000 people would be able to attend the event, which will feature six stages, including the BBC Radio 1 Main Stage and an In New Music We Trust Arena.
It will be broadcast live on Radio 1, Radio 1Xtra and BBC Three, as well as online.
Like Radio 1's other Big Weekend festivals, the majority of tickets will go to people living in Hackney and the surrounding boroughs.
Big Weekend 2011
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