A massive 44 CD collection of music by black artists recorded in
Europe was issued by BEAR FAMILY some years back. That set
is long out of print, but the music has been made available
on the internet.

https://www.bear-family.com/various-history-black-europe-b-stock-the-sounds-and-images-of-black-people-in-europe-pre-1927-44-cd-deluxe-box-set.html

Black Europe Archive

Thomas.