Iannis Xenakis

"With the aid of electronic computers the composer becomes a sort of pilot ... sailing in the space of sound, across sonic constellations and galaxies ..."
Iannis Xenakis (born 29th May 1922 in Brăila, Romania; † 4th February 2001 in Paris) is one of the most radical and important composers of the twentieth century.
He formulated a theory of stochastic music in the early 1950s, co-founded the Groupe de Recherches Musicales in 1958, pioneered the use of computers to compose in 1961 ... As architect, he worked with Le Corbusier and designed the Philips Pavilion for the Brussels World's Fair in 1958.
In 1963, he published Musique Formelles, a collection of his articles relating music, architecture, and mathematics. In 1972, he founded CEMAMu (Centre d'Etudes de Mathématique et Automatique Musicales) in Issy-les-Moulineaux, just outside of Paris. He has composed for a wide range of instrumental ensembles and solos, and his 'polytopes', sound and light spectacles, have been performed in Persepolis in 1971, in Paris in 1972, in Mycénes in 1978, in Paris in 1978.