AHC: Jazz created in Africa

Find a way for jazz to be created and popularized in Africa. Extra points if it becomes a world-wide phenomenon which influences all forms of music like OTL.
 
My approximation of something similar to the original creation of jazz:

The British take over large swathes of OTL Nigeria and Ghana earlier than they did in reality. They bring with them European military bands, whose instruments make their way into indigenous musicians' hands. This becomes the birth of something like big band music. This becomes appropriated by the British elite and it spreads to the UK and throughout the Empire.
 
I’m tempted to suggest something with Liberia for that American specific influence, but I don’t think you’d get enough European influence in general for jazz to arise
 
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