The acoustic concept foresees an electronic manipulation of the driving sounds of the buses and instrumental compositions that are created by four European composers and performed by soloists from other European countries. The electronic part represents the subconscious dark underground and is generated directly from and with the noises of the motors of the buses. The live and electroacoustic compositions represent the conscious presence that floats melodiously on the electronic texture. On its route and at certain stops of the buses windows may open and soloists or tape recorders enter in a dialogue or a musical competition with the musicians and the audience aboard the bus.

Gisela Weimann, Idea and Audio-Visual Concept, Berlin, 1999/2000