Jazz... everyone knows these four letters, which ended up covering everything and anything. Few people know that the music invented and made planetary by black people in the United States has been the object of a veritable cultural genocide, until it has long since been eliminated from concert halls, schools and the media. It was to rehabilitate a cultural exception that Louis Panassié, son of the famous musicologist Hugues Panassié, shot a fabulous film, L'Aventure du Jazz, in the early 1970s, which will remain the privileged trace of an exceptional generation of creators from jazz, gospel or blues. The most famous are Louis Armstrong, Duke Ellington, John Lee Hooker or Sister Rosetta Tharpe, but alongside them more than a hundred others, found when we sometimes did not even know what had become of them, literally resuscitated , more dynamic and moving than ever.