The iTunes Festival has confirmed Usher, One Direction, Norah Jones and Jack White for its 2012 month-long series of free concerts at the Roundhouse in London in September. Tickets are entirely free, but fans must enter to win at www.itunesfestival.com and only U.K. residents are eligible.

Usher kicks off the celebration with a show on Sept. 1. The R&B star will likely perform tracks from his next album 'Looking 4 Myself.' The One Direction concert, sure to be a high-demand event as the boy band continues its takeover of the pop music world, takes place on Sept. 20, according to MTV. Jones hits the stage to promote her new album 'Little Broken Hearts' on Sept. 10.

Since this is an iTunes-sponsored event, expect plenty of cross-promotion on Apple's software and hardware products. Those who aren't fortunate enough to attend in person will be able to stream the concerts on iTunes or on the iTunes Festival app for iPhone and iPad.

The 2012 iTunes Festival was pushed back from its usual July schedule to August to avoid conflict with the Summer Olympics. More performers will be announced in the coming weeks.

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