ABSTRACT
This chapter presents the practical and technical aspects of the multichannel sound installation, followed by an analysis of pedestrian and citizen comments on the footbridge's removal. It defines a few expressions and terms related to the description of sound and its potential for interaction and mediation. The chapter describes the performance's external conditions and focuses on the urban sound milieus in which it took place. Choisy-le-Roi's recent history is a prime example of a rather unfortunate conjunction of strictly functional large-scale urban planning and economic instability. The recorded voices drew considerable attention and surprise because they contrasted sharply with the sound milieus in certain ways and were produced without identifiable bodies. Moreover the use of pre-recorded materials discreetly scattered along the bridge accentuated the fact that they actually were invisible voices, resembling ghost voices, casting a different dramatic character on the performance.
