This is the smartest album formula anybody has devised in years: "18 Months" (Columbia) is front-loaded with established hits, from Rihanna's "We Found Love" to the hot Scottish DJ's own "Feel So Close."

The album also contains guest superstars for a variety of pop and dance audiences, including the jittery, rapping "Here 2 China," co-starring British grime master Dizzee Rascal, and the more straightforward and soulful "Sweet Nothing," with Florence Welch of the Machine.

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Yes, Harris generally keeps everything upbeat, catchy and fun. It totally works, even if his hit-making pedigree is often a little too familiar. Some of this stuff is more than a year old.

CALVIN HARRIS "18 Months"

GRADE A-

BOTTOM LINE Great, diverse and very familiar dance hits featuring guest superstars.