ED,
I have wondered the same thing. No one here seems to specialize in music from the Islands or slave songs. Minimal Gospel coverage. No African music that I know of.
Every once in a while I am tempted to ask a poster if they are black but then assume it's an inappropriate question. Tippy toeing across the eggshells here.
I live in a heavily Hispanic neighborhood and have recommended the Cafe to many musicians whose initial reaction is "Wow, do you really think they want to hear my flute or guitar or whatever" But none have ever shown up.I'll keep trying but I think maybe some outreach is in order. Anybody agree?