This poster announced “Generación automática de formas plásticas y sonoras” (Automatic generation of visual and sound forms), the computer-art exhibition of the Encuentros de Pamplona, an avant-garde arts festival held from June 26 to July 3, 1972. It was mounted at the Hotel Tres Reyes with IBM’s Spanish company, the Centro de Cálculo of the University of Madrid and the CAyC of Buenos Aires. Its forty-three names include John Cage, Iannis Xenakis and the thirteen of the Grupo de Arte y Cibernética, whose works were made again in Madrid from punch cards the CAyC sent.