You know you are a mega-star when you headline the festival for the Olympic Games. Jay-Z, and his protege Rihanna, will ensure Roc Nation is in the building at upcoming 2012 Summer Games, as the pair grab the sole headlining spots. The Jigga Man will open the first day, June 23, 2012, followed by Ri-Ri closing the two day event.

The diverse festival commemoration will include performance from Florence + the Machine, David Guetta, will.i.am, Jessie J, Swedish House Mafia, Ed Sheeran, Lana Del Ray and Flo-Rida.

"There will be absolutely something for everyone: from Beethoven to Jay-Z, from Shakespeare to (film director) Mike Leigh," Culture Secretary Jeremy Hunt said at a news conference.

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