When I hear people talking cheerfully of "Negro music" or the Africa roots of jazz; he often wonders what in the world they can be talking about. What Negro music? What part of Africa? What kind of jazz? Africa is groups than any comparable land mass. Not all Africans are Negroes, and not all Negroes are Africans. African music isn't necessarily Negroes music, and all Negro music isn't necessarily African. Surely, it must be obvious to even the most cursory listener that all four factors which we consider essential to musical construction: mel ....