This composer used a system of graphic notation based on encephalogram read
This composer used a system of graphic notation based on encephalogram readings as the basis of his piece Polymorphia. An E-minor triad and two major triads in the a capella Stabat Mater are the only tonal chords in a piece by this composer that contains many variations on the B-A-C-H motif. A piece by this composer that uses (*) tone clusters made by 52 strings is sometimes called 8'37'' ["eight minutes, thirty-seven seconds"]. For 10 points, identify this Polish composer of a St. Luke Passion and Threnody for the Victims of Hiroshima.
This composer used a system of graphic notation based on encephalogram readings as the basis of his piece Polymorphia.
Krzysztof Eugeniusz Penderecki