De Natura Sonorum

by Bernard Parmegiani

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REGRM 009

De Natura Sonorum, Première série, 1975 (28'03)
- incidences / résonances
- accidents / harmoniques 
- géologie sonore
- dynamique de la résonance
- étude élastique
- conjugaison du timbre

De Natura Sonorum, Deuxième série, 1975 (28'40)
- incidences / battements
- natures éphémères  
- matières induites  
- ondes croisées  
- pleins et déliés  
- points contre champs

Premiered at the Salle Wagram in Paris on 3rd June 1975.
A suite of twelve movements, divided into two series of six.

“The first series comprises six related movements, usually organised in pairs, electronic sounds with instrumental and more rarely, concrete sounds: Incidences/resonances brings into play controlled resonances akin to sounds of concrete origin in a process that helps to expand the variable electronic sound sources. Here, ‘incidents’ are opposed to one-off ‘accidents’ in the second movement: Accidents/Harmoniques (Accidents/Harmonics). In the second movement, very short events of instrumental origin change the harmonic tone of the continuum they interrupt or overlap. Moreover, the high notes are underplayed, which stimulates the attention given to other phenomena generally hidden by the melodic form applied to the instrumental play. Géologie sonore (Sound Geology) is similar to a flight over an area where different ‘sound’ layers come to the surface one after the other. When seen from high above, instrumental and electronic sounds seem to fuse ... Dynamique de la resonance (Dynamics of Resonance) is a microphonic exploration of a single sound resonating through different forms of percussion. L’Etude élastique (Elastic Study) places together various sounds produced by ‘touching’ elastic or instrumental skins (baloons, doumbeks) or vibrating strings and a number of instrumental gestures close to this ‘touch’, using electronic processes to generate white noise. Conjugaison du timbre (Conjugated Tone), the last movement in the series, uses the same substance to apply rhythmic forms onto a perpetually varying tone continuum. “The second series of movements draws its inspiration from concrete and electronic sources rather than instrumental ones. Incidences/battements (Incidences/Beatings) is a reminder of the first movement in the first series which then quickly moves into Natures éphémères (Ephemeral Natures): ephemeral play on instrumental and electronic sounds, singled out by their internal trajectory rather than by the material itself. Matières induites (Induced Matters): just as molecular effervescence triggers a changes of state, it seems that the different states of these sound materials can be generated by each other or through induction processes. In Ondes croisées (Crossed Waves), the pizz vibrations interfere with somehow ‘visible’ water drops on the surface of a similar material. Pleins et déliés (Downstrokes and Upstrokes) can be listened to as the energies absorbed in the motion of bouncing bodies, while hollow ‘bubbles’ and points bring together some people’s gravity and others’ downwards movements. The work finishes with Points contre champs (Reverse Angle Points). Here, the notion of perspective of the different sound threads weaving a kind of network, or field, traps the occasional iterative elements in the foreground and progressively absorbs them, giving more space for the angle - and the chanted sound - to grow.”(B.P.)

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released February 21, 2015

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