Americans who still think of Latin music as mariachi bands and gyrating Ricky Martins and Shakiras might want to lend a closer ear to the genre. This country's Hispanic population isn't just growing, it's growing more diverse. More and more unique musical styles are being gobbled up, and that should come as good news to alternative gringos hoping to spruce up their castellano. This year's Latin-music highlights come from all over the Spanish-speaking map. We'll start in the farthest geographic c
