This volume collects two of Iannis Xenakis’ multi-channel works from the 1970s, along with a long-lost film soundtrack (on the DVD only). Restored from the best quality source materials. A new high-resolution transfer was created from the original analog master tape for Polytope De Cluny. Hibiki Hana Ma has been restored from the multi-track digital masters. (This is audio only on the DVD). Hibiki Hana Ma was created for the Expo 1970 World’s Fair in Osaka, Japan, where it was experienced by thousands. It was designed to be played on a tape loop in a hall which boasted state-of-the-art acoustic equipment, with some 700 speakers scattered under the floor plus 128 surface and suspended speakers symmetrically distributed throughout the pavilion’s amphitheater. Both works were mixed for 5.1 surround and stereo by composer Gerard Pape, who worked with Xenakis and was the director of Xenakis’ CCMIX studio in Paris. Essays by Sharon Kanach and Makis Solomos.