Krzysztof Penderecki, Boundary-Breaking Polish Composer, Dies At 86 NPRGrammy award-winning Polish composer Krzysztof Penderecki dies at 86 euronews (in English)Krzysztof Penderecki, Influential Composer, Dead at 86 PitchforkKrzysztof Penderecki, Polish Composer With Cinematic Flair, Dies at 86 The New York TimesR.I.P. Krzysztof Penderecki, influential avant-garde composer from The Shining and The Exorcist The A.V.