Limbo - 1990 - 08’09
Composition for computer and acoustic and electronic percussion.
Three percussion players: marimba, vibraphone, cymbals, temple blocks, bongo's, snare drum, two Octapads, computer (Atari ST) & software, Yamaha TX 816 (8 * TF-1 soundmodules).
The main idea behind this piece is to achieve a diversity of possibilities in making and changing the timbre of a sound with the use of percussion instruments. The percussion is divided over the three players . This includes two octapads from which the (MIDI) output is used for mapping and calculating to change real-time the sound parameters of the TX - 816. (With specially developed software to change Common and System Exclusive messages.) The score is based on a particular groupings of the sound material , e.g. the pitches are split into four different modi. The score is notated as a certain guided improvisation, the playing techniques and duration of each section occurring within strict boundaries. The order of the material was calculated with help of a Mira fractal calculation that decided to use what kind of material on which kind of moment for which player and for how long it should be played.