I am verifying the answers generated by an automatic system to the following question: what composer used sound mass
Suggested answer: Other examples include European "textural" compositions of the fifties and sixties such as Krzysztof Penderecki 's Threnody to the Victims of Hiroshima (1959) and György Ligeti 's works featuring micropolyphony in works like Atmosphères (1961) and his Requiem (1963-65).
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