CHAMP D'ACTION is a meta-composition for an instrumental ensemble of 3 - 7 soloists. The musicians do not reproduce parts of a fixed score. Instead of playing a pre-fabricated text from note sheets, they are viewing computer monitors which display playing instructions on the fly. The musicians are improvising those structures according to the given parameters.
Instead of being a fixed work, this piece should be viewed as a meta-composition which unfolds itself in a completely unforeseeable manner during the performance. It provides a wide, yet demarcated "field of possibilities" (another meaning of "champ d'action") which is explored by the musicians during the performance.
Although the piece is composed of independent parts, the aim of the musicians should be to create relationships by listening and reacting to the sounds that are produced by the other players which could lead to dramatic and extremely intense situations.
The notation which is displayed on the computer screens is generated in realtime by a computer program written in MAX. The playing information can be controlled by a conductor during the performance which enables him to create a spontaneous version of this piece on the fly.