A polyrhythmic piece “765432” composed by Andréine Bel for her CRONOS dance production (1994) illustrates the use of undetermined rests. Six dancers were on stage: Suresh Shetty, Smriti Mishra, Olivier Rivoirard, Vijayshree Chaudhary, Arindam Dasgupta and Andréine Bel.
In this grammar, “SUB1” indicates a substitution that needs to be performed only once. Using it in replacement of “SUB” saves computation time.
Glyphs “…” are undetermined rests, meaning silences whose duration is a priori unknown and will be precisely calculated by the polymetric expansion algorithm.
The whole structure is constructed on regular arithmetic divisions. For instance, Suresh moves at “speed 7”, Smriti at “speed 6” and Olivier at “speed 5”.
“CR47” and “C46” are patches of the Roland D-50 synthesizer.
The following output was recorded on a Roland D-50 synthesizer.
This performance was part of choreographic work CRONOS performed at the National Centre for the Performing Arts (Mumbai, India) and Shri Ram Center (Delhi) in October 1994. An excerpt is displayed from 4mn 50s to 5mn 10s: