Henri Pousseur, Belgian composer was one of the first to compose electronic music in the mid 1950s. He worked extensively in the first electronic studios in Milan and Cologne before he founded his own studio in Brussels. Back then, these studios were mostly financed by broadcast organisations and large companies.
Pousseur´s compositions are complex and dense, often using the 12-tone technique and tape manipulations. He also composed many pieces for clarinet and full orchestra.
Henri Pousseur died on March 6 in Brussels, shortly before his 80th birthday.
Here is a short excerpt of one of his electronic compositions, "Paraboles-Mix" from 1972, set to some fractal graphics. The original lasts more than 40 minutes: