It is the dream of a universal language, of the eigen-code, already written, yet uninterpreted, a tele-telecommunication, magnetically enciphered, algorithmic, propagated, non-instantaneous, interval in time, wave in field, retraceable. We can reverse engineer it.
Jazz, the origins of which are retraceable to black folk music, brought a very intense change because the development of the mass media and the social and moral changes in the post-war period helped unfold its influence.