Hiller, Wolfgang
[Interviewer];
Keller, Hermann
[Composer];
Keller, Hermann
[Interviewee]
;
Keller, Hermann
[Instrumentalist];
Wilke, Matthias
[Instrumentalist];
Kopitz, Klaus
[Instrumentalist];
Smaczny, Cornelia
[Instrumentalist];
Sommerer, Sabine
[Instrumentalist]
Berliner Improvisationsquartett