Il Contingente Cambia Colore was created with recordings of various types of sounds: from people talking to ambient noises to the sounds of real objects. These elements are sometimes electronically processed using techniques typical of the 1970s, such as filters, ring modulators, and speed variators.
The recognizability of the materials varies and follows a pre-established pattern of both text and sound. It ranges from maximum comprehensibility to a transformation that renders them unrecognizable.
The resulting elements were then organized and recorded in four sequences of 6, 7, 9, and 10 minutes. In 1985, the only way to achieve this mechanism was to record each sequence on a loop of magnetic tape (four “Stereo 8” cassettes recorded on a single track were used) and play them back on four recorders.
The four loops, having different durations, combine the materials differently, so after 63 hours all possible combinations of overlap will have been presented.

This work was presented as an installation/happening, with the visual component created by students in the scenography program at the Academy of Fine Arts in Urbino: Luciano Conti, Stefano Schiavoni, Paola Casagrande, Marco Lion, Alessandro Moroni, and Guido Di Paolo.
In its first performance, at the Pesaro Conservatory, the installation extended from the Conservatory’s cloister to the adjacent corridors overlooking the courtyard and the stairs. The entire Conservatory was immersed in sound and stage props.
In Cesenatico, the installation encompassed the Porto Canale and the town’s oldest porticoes.

realization of the complete installation
June 19, 1975 – Pesaro, “G. Rossini” Conservatory
July 1975 – Cesenatico, Porto Canale

playing audio only
June 5, 1976 – Bourges (France), Festival International de Musique Electroacoustique du GMEB
Jul 29, 1976 – Cervia, Magazzeno del sale, Cervia ’76
Sep 25, 1976 – Music Performance Pescara – SalanQuadrifoglio, Thin Group
Nov 8, 1976 – Rome, New Consonance Festival, National Gallery of Modern Art
Nov  11-17, 1985 – National Institute of Architecture In / Arch Sound system of the exhibition “The Empty City”