Good point. And I think that the American musical heritage is extremely rich. We seem to have inherited a shared tradition despite the presence of slavery and segregation. That in itself is a strong argument for the basic unifying power of music. No where, not in the Blues or in the Gospel forms, are there strong and clear delineations between black and white influences. People like the Skillet-Lickers, Jimmie Rodgers, Dave Macon and Blind Blake all influenced one another and learned from many of the same sources.