Fanny Lu has always mixed Colombian pop-folklorico (cumbia, vallenato) with killer hooks and beats, but now she's got that formula down to a science. Like the split personality photo of Lu on its cover, Felicidad is at once slick and friendly. Lead single "Fanfarrón" gestures toward the sunny acoustics of her big hit "No Te Pido Flores," but beyond that, Lu gets adventurous: "Ni Loca" layers electro-cumbia with ska-ish horns and Latin pop licks; "Te Amo, Te Amo" samples "Funkytown"; and the quirky, reggaeton-laced cumbia funk of "Don Juan" shows just how effervescently Lu can sell her formula.