Jason Derulo has signed on to join Alexandra Burke for this summer’s anticipated Capital FM Summertime Ball. Slated to take place at London’s Wembley Arena, this year’s show will also feature Rihanna, Usher, Justin Bieber, JLS, Ke$ha, and Cheryl Cole. According to organizers, who confirmed Derulo and Alexandra Burke Wednesday, April 21, the Summertime Ball will be hosted by Johnny Vaughan and Lisa Snowdon. The show takes place Sunday, June 6.

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