I don’t know a ton about music but I thought this article was fascinating. They give examples of musical styles that have recorded examples years or more before they supposedly ever existed. The #1 pick is a black rap song recorded in 1968 and, although it is part of a comedy album, I can’t deny that it is a real rap song.
I am writing mainly to share but also get other people’s perspectives and maybe some other examples of such things. A response like ‘there is nothing new under the sun’ is true in one sense but not helpful in this thread.