Being a global phenomenon means nothing in art. (Justin Bieber is a lot more popular than Frank Zappa, so what?) Personal taste aside, other unrelated issues mu

Being a global phenomenon means nothing in art. (Justin Bieber is a lot more popular than Frank Zappa, so what?) Personal taste aside, other unrelated issues must be taken into account. For example, were the Beatles black, could they have had the same popularity back then? And what about the other way around (a white Miles Davis)?