This volume collects two of Xenakis multi-channel works from the 1970s, along with a long-lost film soundtrack.
- Polytope de cluny is accompanied by images of the actual production from the Festival d Automne. A new high-resolution transcer was created from the original analog master tape.
- Hibiki Hana Ma has been restored from the digital masters. Audio only.
- Both works were mixed for 5.1 surround & stereo by composer Gerard Pape, who worked with Xenakis & was the director of Xenakis CCMIX studio in Paris. Tracklisting: 01 Hibiki Hana Ma (1969-70): electroacoustic work for 8-channel tape (ca. 18 Minuten) 02 Polytope de Cluny (1972-74): electroacoustik work for 8-channel tape (ca. 25 Minuten) 03 NEG-ALE (1960): with the film Vasarely for piccolo, horn, cello, & percussion (ca. 8 Minuten)