///Dixieland jazz was based on the Marching Band tradition of Sousa and others which dates circa 1880.////

It was due more a combination of the horn and string band. Jazz could not have happened without it.

///Blues have been documented from that general time period. You could say that most white musicians from the Carter Family to The Carolina Tar Heels knew the blues and played it it in the 1920s. Jimmie Rodgers, the Father of Country Music, played predominately blues.////

I'm not talking so much about white musicians as I am the general white public. They knew more about blues then than we can account for now with our spotty, jury-rigged, half-assed histories full of erroneous preconceptions and lethally tainted with political correctness.