Sound images, multiple reflections of these images, inverted, multiplied, stretched, transmuted. The reflections are played out on several levels: between the band and the instrument, between the horizantal and the vertical, at the level of the timbre, and at the level of the form. The writing employs many unconventional instrumental techniques that have been incorporated into the structure of the piece; its harmony and melody are intimately linked to multiphonics and quarter-tones. Deforming Mirrors, the first piece produced at the CIAMI (computer center applied to music and image, directed by Jean-Claude Eloy), uses significant resources, both for the instrumental part and for the electro-acoustic part. The quadraphonic band uses as starting material the oboe, but also some other sources (zarb, saxophone, synthetic sounds) that have been worked on two systems: Syter (real-time processing system developed at the GRM) and CARL (set of non-real-time software developed at the San Diego Center for Music Experiment); everything was then worked in a classic studio and mixed in 24 tracks.