Earlier quoted context omitted.
I didn't ask for examples, I'm familiar with what race these artists are. My point is if the music actually is so different, it should be noticable and describable without knowing the race of a particular artist. So how would you describe the black music that describes only black musicians but not white musicians from this period, and vice versa.
"Should be describable" is a false metric. We can hear differences between categories and not be able to verbalize what we're hearing. It's the same for anything -- you could walk through a museum showing abstract expressionism and action painting, and feel that one of the styles speaks to you, and yet not be able to put into words how the two styles are different. The brain can categorize much more easily than it ca…
For some reason, the view is widely held that internal thoughts are expressed in words. This would mean that anything you can think can easily be verbalized.
The fact that this view is quite obviously false seems to bother very few people.