The entire "civilized world," to use an anachronism, but not places like the interior of Mali, where there were still ethnomusicologists who were roaming around with 78-rpm record cutters, often WWII surplus.
Which reminds me, in my study (I was born in '54 so it's before my time ;> ) we learned that post-WWII there were lots of low-power AM stations in the rural south, made from WWII surplus transmitters, with white-owned stations playing country and black-owned stations playing blues and rhythm/blues. At night white people could listen to black music on their portable radios without getting caught, and black people could listen to country, and both could listen to high-power popular music stations like WLS and WOR, so the different musicians began to use what they heard in the other's music, with the result being rock-n-roll. When the Mali recordings were being made in 1952, Alan Freed was beginning the new era of popular music, and it's never looked back.
George Gershwin wrote RHAPSODY IN BLUE in 1924, for crying out loud! And that is BLUES!
You need to learn more about the blues' history!