Questo brano è ben noto ai cultori di musica contemporanea, ma lo proponiamo per la sua importanza storica. Il testo è tratto da wikipedia inglese (nella vers. italiana non c’è).

Threnody to the Victims of Hiroshima (Tren ofiarom Hiroszimy in Polish) is a musical composition for 52 string instruments, composed in 1960 by Krzysztof Penderecki (b. 1933), which took third prize at the Grzegorz Fitelberg Composers’ Competition in Katowice in 1960. The piece swiftly attracted interest around the world and made its young composer famous.

The piece-originally called 8’37” (at times also 8’26”)-applies the sonoristic technique and rigors of specific counterpoint to an ensemble of strings treated unconventionally in terms of tone production. Penderecki later said “It existed only in my imagination, in a somewhat abstract way.” When he heard an actual performance, “I was struck by the emotional charge of the work…I searched for associations and, in the end, I decided to dedicate it to the Hiroshima victims”. Tadeusz Zielinski made a similar point, writing in 1961, “While reading the score, one may admire Penderecki’s inventiveness and coloristic ingeniousness. Yet one cannot rightly evaluate the Threnody until it has been listened to, for only then does one face the amazing fact: all these effects have turned out to serve as a pretext to conceive a profound and dramatic work of art!” The piece tends to leave an impression both solemn and catastrophic, earning its classification as a threnody. On October 12, 1964, Penderecki wrote, “Let the Threnody express my firm belief that the sacrifice of Hiroshima will never be forgotten and lost.”

The piece’s unorthodox, largely symbol-based score directs the musicians to play at various vague points in their range or to concentrate on certain textural effects, and they are directed to play on the wrong side of the bridge, or to slap the body of the instrument. Penderecki sought to heighten the effects of traditional chromaticism by using “hypertonality”-composing in quarter tones-to make dissonance more prominent than it would be in traditional tonality. Another unusual aspect of Threnody is Penderecki’s expressive use of total serialism. The piece includes an “invisible canon,” in 36 voices, an overall musical texture that is more important than the individual notes, making it a leading example of sound mass composition. As a whole, Threnody constitutes one of the most extensive elaborations on the tone cluster.

Una delle composizioni più materiche del polacco Krzysztof Penderecki (1933) questa De Natura Sonoris per orchestra che esiste in due versioni, la prima del 1966 e la seconda del 1971. In realtà si tratta di due composizioni diverse, accomunate dalla medesima ispirazione legata alla varietà degli aspetti della natura e al loro evolvere.

Come già nella famosa Threnody, del 1960, per 52 archi (probabilmente il suo brano più noto), Penderecki si adopera per creare nuove sonorità strumentali, soprattutto con gli archi e fa un uso esteso di alcune delle sue tecniche compositive favorite, come quella che si basa sulla libera combinazione di piccole frasi melodiche assegnate dapprima a un ristretto gruppo strumentale, per estendersi, poi, gradualmente a tutta l’orchestra.
Nel secondo brano, inoltre, il compositore utilizza vari effetti percussivi, come quello ottenuto da una sbarra di ferro colpita con un martello e con una sega.

È una musica semplice sotto l’aspetto formale, basata più sull’effetto fonico che su una rigorosa struttura, ma rimane comunque affascinante.