"Çogluotobüsisletmesi" is a thirty-minute extremely polyphonic composition: its several layers run parallel to each other in time but at varying speeds, and their individual textures can be described as pointillistic, melodic, chordal, rhythmically smooth or jerky, as the case may be. Additionally, the music varies from tonal to atonal, metric to ametric, eventful to sparse; all changes take place with great continuity; the piece forms an organic whole.
Work on the composition was preceded by months of research on Plomp and Levelt's acoustic theory of consonance and dissonance, as well as on algebraic investigations of the phenomena of tonality and metricity.
"Çogluotobüsisletmesi" makes use of intervals derived from quarter-tones, whereby only four piano strings per octave are retuned. The composer was inspired in this by music heard in 1975 in a bus in Eastern Anatolia, which fact led to the title of the piece.
The piece was entirely generated by computer programmes written by the composer in 1975 and 1978-79.

Audio performer, Herbert Henck