This storied band are the ambassadors of Cuban son, so you know the swaying, shuffling grooves are going to be rich and, yes, soulful. The sheer mastery with which these various explorations on the traditional rhythm are assembled is impressive indeed. But what's most striking on this collection is the warmth with which they're executed. The vocals are bright and captivating, sun-kissed harmonies interlocking with as much tight precision as the layered instrumentals and the syncopated son beat. Fans of Buena Vista Social Club, take note: This is the band that paved the way.