The genuine part of this is Blind Willie Johnson, Skip James and J.B. Lenoir. Lenoir is seen in documentary footage never shown before (and thereby hangs a tale). Skip James you see performing in his later years after his thirty-years' silence. Blind Willie Johnson is represented by an actor mouthing his words. Their music is heard clearly, and then covered by artists of the present day. Wenders is struck by the fact that Voyager went up with a Blind Willie Johnson song on board. Where are the blues? Lost In The Stars.