Jazz is no more only black as in 1930, no more American as in 1960 it is universal music phenomenon
Besides the fact that holding forth on which culture belongs to whom is kind of a hazardous pastime nowadays, it is also misleading.
Take the blues. It was Black folks who graced the world with it; that’s not really open for debate. Neither is the fact that, way back in the hallowed (in this thread at least) 60s and 70s, numerous bands made up of white, skinny, vocational-school dropout British kids with bad teeth appropriated it and "adapted" it into something deemed acceptable by white suburban teenagers and their parents, and became filthy rich doing it.
Is it to say that, just because it was dragged away from its roots, the blues is no longer black music like it was back in the 50s? Has its being appropriated, plundered and exploited by white folks and white record companies somehow whitewashed it into a global musical genre? Sorry I don’t follow