THE ELECTRONIC WORKS OF GYÖRGY LIGETI AND THEIR ...

course of Event 2 is the effect of the accelerating entrances discussed in the paragraph
above.
The third event is a large glissando rising to over 4300 Hz, which breaks from the
register of the previous events; this is however the resultant texture, made of the previous
material. While the direction of the whole is clearly upwards, elements of the downward
glissandi introduced in event two are still audible, especially in the first half of this event,
up to 34.6 seconds, where the cross-hatching in the spectrograph is still clearly evident.
An increase in reverberation and the density of the texture obscures any individual
entrances, and the whole is perceived as a single entity, one rising aggregate of noise
bands.
Section B.
Section B begins immediately at 40" at the end of Section A and lasts until 1'24".
While Section A was made of homogeneous material–20 Hz. noise–Section B uses a
variety of different materials; and while Section A expanded upwards in register, Section
B begins in this higher register, from approximately 2000-12,000 Hz, and then begins
filling in the lower register with diverse materials growing in density. This accretion of
material and density is defined by a duration scheme which determines the entrances of
individual events. A quasi-serial matrix then assigns a type of material and register to each
event–the spectrograph in Figure 2.4 labels these events according to Ligeti’s matrix,
which will be explained below.
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