This whole concept of cultural exchange and persistence is fascinating.
Rock and Roll. Invented by Southern blacks and whites as a mix of black R&B (which grew out of African musical styles) and hillbilly country music (which was very British-Appaliacian), then exported to and in many ways refined and perfected in Britain!
There are even quite a few impressive English rappers these days....amazing how the cultures are still influencing each other.
If one does a few 'pubs' in North Ireland that feature live music, its not whit different from what we call Country and Western. Even their humor is very similar to what is found in the southern and western USA.
The after hours joints are even better.
Have you read Albion's Seed by David Hackett Fischer? Fascinating read about migrations from the Br. Isles to four areas in the new world: Mass. Bay, Penn., Appalachia and I believe Tidewater Va.
Takes some of his conclusions to far but by and all a worthwhile read.