A – voruebergehend gestoert
for Turbotuba and Tape, 1997

A - voruebergehend gestoert (A - temporarily out of order) is a composition for Turbotuba – a prepared tuba that I developed for this piece myself in cooperation with the tubist Michael Vogt. In this piece, electronically produced sounds and processed noises, that would normally be heard over stage-loudspeakers, come out of the bell of the turbotuba itself. A small but powerful loudspeaker is placed into the opening of the 6th valve tube of the instrument, enabling the tubist to choose between his own playing and the electronic sound waves – or a mixture of both – by use of the valve.