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21 April 2012, 12:06
Justin Bieber, Katy Perry and Coldplay are among the artists set for this year's event at Wembley Stadium.
Capital FM fans have praised this year's Summertime Ball line-up as "amazing".
The 2012 line-up was confirmed today (21st April) during Capital Breakfast and features Coldplay, Katy Perry and Justin Bieber.
Usher and The Wanted are also set to perform on a bill that includes some of the biggest stars in international music.
Kelly Clarkson, Ed Sheeran, Jessie J, Example, Flo Rida and Pitbull complete this year's line-up.
Music fans from around the world have been reacting to today's announcement on Capital's Facebook and Twitter pages – and we've rounded-up some of the best responses below.
Hearing about Justin Bieber's confirmation, Summer Hilton wrote on Twitter: "Really arrrrrrr justin bieber at summertime ball whoop well getting tickets whhooop."
Another fan of Justin, Louis Borg, simple said "life complete", while Livy Hilton said: "Omg the summer time ball @CapitalOfficial sounds amazing!!!!!"
News that Coldplay were playing at this year's Summertime Ball sparked a frenzy on Twitter, with Samantha Cowan writing: "COLDPLAY....I NEED TO GET TICKETS AND GO AGAIN THIS YEAR!"
Aime Houghton wrote on Twitter: "cryin @CapitalOfficial summertime ball lineup involves @coldplay @example @UsherRaymondIV been moanin i wana see usher&coldplay for years"
Shortly after Katy Perry was announced as the final act for the show the social networking site went mad with anticipation for the singer's first confirmed UK appearance of 2012.
Sammi Scally tweeted: "just threw my phone across the room so happy! #KatyAtTheBall #excited."
You can check out the full line-up by clicking on the link at the bottom of this page.
Tickets for the fourth edition of the event go on general sale on Monday (23rd April 2012) at 8am.
If you're a Capitalfm.com VIP or a Vodafone customer, you can get access to an exclusive tickets pre-sale now.
Keep your eye on the ball by visiting our special Summertime Ball area for all the latest information on this year's hit music event.