The exercise is to decide whether the question accepts the proposed suggestion as a correct answer. If yes, write "True", otherwise write "False".
Question: what composer used sound mass
Suggestion: 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).
