There's a great Canadian documentary, recently on TV down here in Australia, called Rumble: The Indians Who Rocked the World .... well worth watching if you can find it.
It's about the influence of indigenous 'Americans' in American music.
Amongst the greatest of the olds was Charlie Poole (probably Chocktaw) ... and Mildred Bailey (Coeur d'Alene)...HowlinWolf(Chocktaw)... too many others to mention ...
People probably don't realize that when the African slaves arrived the Native Americans were the 'slaves' in the states (they were treated worse if you can believe it} ... so there was a fair bit of intermingling between the two cultures .... blacks were taken into tribes ... they were all classified as colored in those days.
And the doco shows how old 'Indian' music was very very bluesy.
Mardi Gras in New Oleans is the most prominent expression of it all these days.