You can try to listen some of MP3 file of improvisation by Daisuke Terauchi.
I am afraid that some noise is also recorded because these are live recordings.
Perfomence at White Elephant in Rotterdam, March 2006 (10.1MB)
Wieland Moeller (Drums)
Gonzalo Pinto d'Almeida (Doublebass)
Daisuke Terauchi (Recorder, Voice, Keyboard Harmonica and some small instruments)
Tamahi Miyake (Voice, Theremin and some small instruments)
Michal Osowski (Computer)