"rock." . . "USA." . . "progressiv rock." . . . . "1970-1979." . . "1971 - 1980" . . . . . . . . "Extraction ;Footprint" . . . . . . . . "progressiv rock" . . . . "vokal" . . . "Extraction" . . . . . . . . . . "rock" . . . . . . . . "vokal." . . "Rock (Musique)" . .