Vallenato may be a traditional Colombian folk style, but don't mistake that to mean it's not growing and evolving. Grupo Kvrass are living proof of its dynamism. The band began making waves in 2007, and such was their impact that they were quickly adopted by the press as the new sound of Vallenato. That means combining classic elements—cascading accordions, tropical basslines and impassioned vocals—with a loose and unrelenting energy that can only come from young, freewheeling musicians. And best of all, popular early tracks like the bounding, ecstatic "La Joyita" are just the beginning.