After selling more than half a million copies in the United States of previous album "Pa'l Mundo," reggaetón duo Wisin & Yandel needed to somehow evolve while preserving its fan base. The result is an album heavy on classic reggaetón dance tracks like first single "Sexy Movimiento" and "Ahora Es" (which quotes from Colombian dance classic "La Noche"), but also full of ear-catching duets. Those include "Control," featuring Eve rapping in English, and the romantic "Oye Donde Está el Amor" with balladeer Franco De Vita. There's social conscience on "Ya Me Voy," a plaintive tale of a life lost to gangs, and naturally, rhythmic fusions, like the quick merengue on "Dime Quiénes Son." While this is well and good, "Los Extraterrestres" will be a success thanks to W&Y's formidable ability to fuse rhythms without ever sounding contrived. —Leila Cobo