How do you follow up the success of hits like "Sexy Bitch," "Gettin' Over You" and "I Gotta Feeling"? French crossover sensation David Guetta stays with the smart money on Nothing But the Beat, the follow-up to 2009's One Love. The guest list is strictly A-list -- Flo Rida, Taio Cruz, Snoop Dogg, Usher, Will.I.Am, Akon, Chris Brown -- and the pumped-up synths have the gleam of money in the bank. A Timbaland collab throws back to Missy-era beats, but the rest is relentlessly contemporary, glossy, pumping club pop. In 2011, what counts is that it sounds expensive.