Edgard Varêse and Le Corbusier - Poême électronique (1958)

“Poème électronique” (Electronic Poem) was composed in 1958 by Edgard Varèse, the father of electronic music, and Iannis Xénakis, one of the most important modernist composers of the 20th century, under the direction of Le Corbusier, one of the most important architects of the 20th century.

http://discorgy.wordpress.com/2008/08/04/varese-xenakis-le-corbusier-poeme-electronique-1958/