Capitol Tower red for Guetta

RED LIGHT DISTRICT: You weren’t hallucinating last night—the Capitol Tower really was bathed in red. The occasion was the release of David Guetta’s new album, Nothing but the Beat, a guest-star-loaded affair featuring the voices of (in alphabetical order) Akon, Chris Brown, Dev, Flo Rida, Jennifer Hudson, Jessie J, Lil Wayne, Ludacris, Nicki Minaj, Sia, Snoop Dog, Taio Cruz, Timbaland, Usher and the ubiquitous will.i.am. Apparently, Justin Bieber was busy. (8/31a)