"Eliane Radigue's Chry-Ptus is her very first piece for the modular synthesizer. It was composed in 1971 using a Buchla 100 which had recently been installed at NYU by Morton Subotnick.

Originally two tapes which are to be played simultaneously, with or without synchronisation, which does not affect the structure of the work, but creates changes in the game of sub-harmonics and overtones. Three variations on this piece were performed at the New York Cultural Center in 1971, with variations of amplitude and location modulation as well as synchronisation and de-synchronisation up to one minute both way. Realised on the Buchla Synthesizer at the New York University." Track 1-2 realised at CCMIX, Paris. Track 2-2 realised in Milano."

Important, 2019