Xenakis, Iannis

Romanian-born Greek-French composer and architect (b. May 29, 1922, Braila, Rom. - d. Feb. 4, 2001, Paris, France), based his music on mathematical principles, particularly theories of probability. Although his music was generated by the rigorous application of nonmusical ideas, the results were often powerful and moving. He created orchestral, ensemble, and solo works for traditional instruments