big thanks to françois carrier for the heads-up fantastic mini-documentary, showing brut artiste & musique concrète composer karel appel at work, sound-tracked with music from his “musique barbare” lp (composed at the instituut voor sonologie in utrecht ca. 1963 with frits weiland, jaap vink, and will eisma !!!) ::

(for the impatient :: skip to 8:30 or so …)