Florence & The Machine, Rihanna, Alicia Keys, Dizzee Rascal, Pendulum and Cheryl Cole will all perform at BBC Radio 1's Big Weekend in Bangor, on 22 and 23 May.

Chris Moyles unveiled the line-up of over 30 UK and international artists who will be playing on the two main stages during his show, with a bit of help from fellow Radio 1 DJ Zane Lowe.

Other artists include Scouting for Girls, Biffy Clyro, JLS, the Lostprophets, Kids in Glass Houses and Marina & The Diamonds.

BBC Radio 1's Big Weekend is the station's flagship event and the UK's biggest free ticketed festival. Around 40,000 fans can enjoy performances from four stages in Vaynol Estate - the Main Stage; the In New Music We Trust Stage; the Outdoor Stage and the BBC Introducing Stage.

For listeners tuning in there will also be exclusive Live Lounge sessions broadcast from backstage.

Jason Carter, Radio 1's editor for live music and events, says: "We've pulled out all the stops for our tenth BBC Radio 1's Big Weekend with an outstanding line-up of the best UK and international talent, along with new and emerging artists.

Rihanna, Alicia Keys and Florence And The Machine will top the bill at BBC Radio 1's Big Weekend.

Cheryl Cole, JLS and Dizzee Rascal will join them at the radio station's annual extravaganza, which takes place at Vaynol Estate, Bangor, North Wales on May 22 and 23.

Other acts taking to the stage include Scouting For Girls, Pixie Lott, Ellie Goulding, Vampire Weekend, Biffy Clyro, Lostprophets, Justin Bieber and Marina And The Diamonds.

Jason Carter from Radio 1 said: "We've pulled out all the stops for our tenth Radio 1's Big Weekend with an outstanding line-up of the best UK and international talent, along with new and emerging artists."

Fans have to register for the free tickets, which are available now via ballot.