MECHANICAL REPRODUCTION
Technology and the aura
Walter Benjamin
Deguerreotype
Daniel Webster deguerreotype
film negative
Alfred Stieglitz
Man Ray
Motion
Phonographic sound
Live performance
radio
Musique Concrete
Pierre Schaefferpierre schaeffer - "etude aux chemins de fer" ("railroad study")
Pierre Henry
John Cage
John Cage - score for "Wiliams Mix" (1950)