Different cultures have different musics, and they use them in different ways, but I doubt if there's any link between the kind of music people like and make and their genetic makeup.

The people of all continents have produced a staggering range of traditional music and song. Humans are like that. When we find ourselves making generalisations about the music of the people across a continent we need to remind ourselves of the range of variety that exists and has existed.
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Devalued to me is nothing to do with being less valuable, it is to do with not having one's true value appreciated. To quote a line from the Ballad of Amadou Diallo by Larry Otway (InOBU of Mudcat) when he is referritg to Amadou's homeland, Guinea "Ancient wisdom despised, history buried beneath lies".