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Library shelf no. CD 54 [Available for loan]
This recording is an improvisation by Simone de Haan (trombone) and accompanied by some of the sequenced instruments of the Tupperware Gamelan, a collection of purpose-built battery powered instruments which I began to build in 1977. It consisted of analogue electronic hardware mounted in plastic kitchenware. The instruments were initially intended to be played by an ensemble of non-expert performers and in 1980 included a set of mobile sound sources called UFOs which produce the Doppler effect when they are swung on the end of a cord. In 1983, these were modified so they could be sequenced using a purpose-built pseudo-random sequencer and used as sound and visual props for the One Extra Company production of Porcelain Dialogue performed at Sydney Opera House, Melbourne Playhouse and Canberra Theatre. This recording made with remnants of the modified UFOs of the Tupperware Gamelan was made in 1985
Instrumentation: Trombone solo, purpose-built (pre-MIDI) hybrid analogue-digital hardware consisting of: 16 sequenced oscillators, each mounted in a self-contained hanging demultiplexer-oscillator-amplifier-loudspeaker unit. 1 pseudo-random sequencer-multiplexer implemented using digital CMOS shift registers and exclusive-OR gates with digital feedback controlled by binary switches
Duration: 6 min.
Difficulty: N/A - Not for live performance
Live-performance electronic music produced using purpose-built hybrid analogue-digital instruments pseudo-random sequencer is based on early circuits of Joel Chadabe, Aardvark synthesiser of Warren Burt and Patent Little Marvel of Carl Vine.
- In the form/style of: Improvisations
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