Rock 'n' Roll is played with European instruments using European chord structures and European scales to European themes.
Rock 'n' Roll was formed from American White European folk music in the Appalachians which the niggers heard because most White European Americans were not wealthy and did not own slaves.
Folk, Bluegrass, Country... all White and the entire basis of Rock 'n' Roll.
Soul food? Like Fried chicken? Scottish. Boiled greens? Pottage, which is Anglo-Saxon and Celtic. Chitterlings? Lower class Germanics would eat the offcuts of sausage production. ALL WHITE!!!
As for it being unique... and? Who cares? White Americans made quite a bit of music that was unique from what was in Europe, and vice versa.
Listen to old Hank Locklin, Hank Williams Sr., Jimmie Rodgers, even as recent as Johnny Cash or the Carter family. Same instruments, same subject matter, same depressive tone. There are a lot more similarities than differences. It's obvious they're both sister genres but the parent genres are *white*
To make it even more complicated, there's 2 types of blues. Country blues and urban blues. Country blues was created by all 10 of the black people who lived in the rural south in the 1920s and it's literally the same as Country, there is very little difference
But what do you probably think of when you think of country? Some gay shit like Garth Brooks or Florida Georgia Line. So this is a lot less obvious from the perspective of what country is today
I also did AV and IT work for bands to record music and live shows and administer their websites. Then MySpace came along then YouTube and it wasn't worth my time for the money since they could do most of the stuff themselves easily - all they needed was a homepage with links to their social media accounts. Plus I had a girlfriend who was in graduate school and I was in my final year and still worked for the university as well as the radio station, and grandma had cancer (she died 2 days after my last final).