Katy Perry, Maroon 5 Set the Stage for Windows Phone Launch (PHOTOS)
Celebuzz's Mobile Blog Workforce was hard at work (and play!) last night, soaking in all the excitement and great live music. Check out the dispatches from both Katy's rockin' set at NY's Roseland Ballroom, and Maroon 5's full of hits show at San Francisco's Fillmore Theatre.
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