This isn't the type of music I consciously seek out. I remember going to a spanish-language music concert when I was a senior in high school, and I thought the music was fun and upbeat (probably because it was more pop/dance-style music). But my tastes have matured in the intervening 13ish years, and this music is a more serious affair.
The instrumentals are sweeping and well-crafted, and the vocals are passionate (you don't have to know the language to understand that). Some songs are more somber and some are more upbeat. The beats in general are quite catchy. The first song, "Chan Chan" caught my interest immediately, and it's probably my favorite one on here. Overall, this album is wonderful and complex musically to listen to.