Poême électronique
A synesthetic arousal of images in motion, sounds and lights. I can only imagine how impressive Poême électronique was when presented live in the form of performance at the 1958 Brussels Worlds Fair. 425 speakers were placed all throughout the space created by LeCorbusier and Iannis Xenaki, with the purpose of having Edgard Varêse's sound appear to move in space, all around the audience. A sort of precursor of surround sound.
In LeCorbusier's own words: "I will not make a pavilion for you but an Electronic Poem and a vessel containing the poem; light, color image, rhythm and sound joined together in an organic synthesis". Documentation and images here.