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THE ELECTRONIC WORKS OF GYÖRGY LIGETI AND THEIR ...

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Thus the symmetry described by Escot reflects only the background structure of the<br />

music, much like the schematic description of Glissandi as the prime form, followed by<br />

the simultaneously running prime and retrograde forms, and in each case there, this<br />

symmetrical spatial structure is presented through another compositional layer altering the<br />

way this schematic form unfolds in time, and enriching its complexities and nuance.<br />

Figure 4.11. Symmetrical Pitch Structure of Harmonies<br />

The schematic description of Artikulation involved a progression from contrasted<br />

material to dense conglomerations of sound, and was a particularly complex progression<br />

involving the recombination of multiple parameters of sound. While oppositions such as<br />

241

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