Instrumentation Works for Orchestra
MIXTUR for orchestra (small ensemble), sine—wave generators and ring—modulators
|SCH = PERCUSSION|
|H = WOODWIND|
|B = BRASS|
|P = PIZZICATO|
|S = STRINGS|
There is only one part for each group of instruments. All parts have the same page numbers in the upper right hand corner as in the score. 2 players read from one part and have 2 stands.
3 percussionists: each 1 cymbal
|each is suspended with several leather straps; for each and each 1 contact microphone fastened onto the straps or onto the surface of the instruments.|
|H||flute (also piccolo) (F1)|
|clarinet (also clarinet and bass clarinet) (Kl, Es—Kl, Bkl)|
|bassoon (also contrabassoon) (Fg, CFg)|
Tp and Ps require 3 mutes: straight, cup, wawa.
|trombone (with thumb valve) (Ps)|
|high horn (1. Hn)|
|low horn (2. Hn)|
|P||2 violins I ( V1 I )|
|2 violins II ( V1 II )|
|2 violas (V1a)|
|S||2 violins I|
|2 violins II|
The parts include transpositions for piccolo, clarinet, clarinet, bass clarinet, contrabassoon, F horns (1. Hn high sounds a 5th lower, 2. Hn low sounds a 4th higher), contrabass.
The contact microphones of the 3 percussionists are to be connected to 3 loudspeakers (see position in the plan).
Each of the groups H B P S should sit concentrated and be separated from the others as much as possible. Every woodwind and brass player and every desk of violins and violas has a microphone; all Vc and Cb have individual microphones. The 4 microphone groups H B P S are each balanced in a mixer by a sound technician sitting with his group. The sum of each group is connected to a separate ringmodulator (if possible, special modulators, which give only the primary sum and difference frequencies).
4 further players, who also sit with their groups, each operate a beat frequency oscillator (sine-wave generator with continuously changeable frequency from 1 - or if possible a still lower frequency - to 4200 Hz). Each of these beat frequency oscillators is connected to one of the modulators. The oscillators are indicated in the score by ~.