Andrea Echeverri and Héctor Buitrago have guided Colombia's Aterciopelados into position as one of the undisputed leaders of contemporary Latin rock, thanks in no small part to their astonishingly wide tastes in music. Here's an introduction to the global grooves that have helped make the band's brew so potent—from prog rock and protest folk to boogaloo and the rhythms of cumbia and bambuco.