Observation: Music

As we were walking through Santa Rosalia today, a man drove by with his car windows down, and Mexican music was blaring out. It occurred to us that this is a fairly common occurrence. What was noteworthy to us was that the music we hear in this manner is almost always traditional Mexican music. When we were in Africa last fall, whenever we heard music, it was almost always American music, as has been our experience when traveling in Europe or Asia, though the volume in both Africa and Mexico are equally loud. We wonder: why is it that the Mexicans have retained this aspect of their culture, when others in so many cases have not, even though they are much more proximate to North America?