I discovered the same thing Gram Parsons did, that soul music and country music are practically identical. Based off of the same chord structures, and the songs are of heartache and loss. The main connection is they both came up in church.
No one thinks of Mexico and Peru as black. But Mexico and Peru together got 700,000 Africans in the slave trade. The coast of Acapulco was a black city in the 1870s. And the Veracruz Coast on the gulf of Mexico and the Costa Chica, south of Acapulco are traditional black lands.