Poème électroniquePoème électronique (English Translation: "Electronic Poem") is an 8-minute piece of electronic music by composer Edgard Varèse, written for the Philips Pavilion at the 1958 Brussels World’s Fair. The Philips corporation commissioned Le Corbusier to design the pavilion, which was intended as a showcase of their engineering progress. Le Corbusier came up with the title Poème électronique,} saying he wanted to create a "poem in a bottle". Varèse composed the piece with the intention of creating a liberation between sounds and as a result uses noises not usually considered "musical" throughout the piece.
Original performanceThe pavilion was shaped like a stomach, with a narrow entrance and exit on either side of a large central space. As the audience entered and exited the pavilion, the electronic composition Concret PH by Iannis Xenakis (who also acted as Le Corbusier's architectural assistant for the pavilion's design) was heard. Poème électronique was synchronized to a film of black and white photographs selected by Le Corbusier which touched on vague themes of human existence. Le Corbusier's original concept called for a pause in the film while his voice was heard, speaking directly to the audience. However, Varèse objected to the idea that Le Corbusier's voice would be played over his composition, and the idea was abandoned.
The interior of the pavilion was also lit by a constantly changing pattern of colored lights, and in addition to the film, three separate projectors showed additional still photos on the walls.
SpatializationVarèse designed a very complex spatialization scheme which was synchronized to the film. Prefiguring the acousmonium style of sound projection, hundreds of speakers were controlled by sound projectionists with a series of rotary telephone dials. Each dial could turn on five speakers at a time out of a bank of 12. Many estimates of the pavilion's sound system go as high as 450 speakers, but based on the limitations of the switching system and the number of projectionists used, an estimate of 350 seems more reasonable.
The speakers were fixed to the interior walls of the pavilion, which were then coated in asbestos. The resulting appearance was of a series of bumps. The asbestos hardened the walls, creating a cavernous acoustic space.
The spatialization scheme exploited the unique physical layout of the pavilion. The speakers stretched up to the apex of Le Corbusier's points, and Varèse made great use of the possibilities, sending the sound up and down the walls.