Siegfried Roessert studied musicology, history and ethnology at the University of Munich and also at the Munich Jazz School (Bass with Adelhard Roidinger and theory with Joe Haider) as well as double bass with Caius Oana and singing with Ingeborg Bremert. Since 1978 he works as a bass player, singer and producer in a multitude of Bands as well as in ensembles for ancient music (e.g. Kevin Coyne and ENGEL WIDER WILLEN). Siegfried Roessert was chairman of the ICI-Ensemble (international composers and improvisers / Munich) and played together with such renowned musicians as Barry Guy, Giancarlo Schiaffini and David Moss. In his extensive work as a musician he guested at the Jazzfestival Worms, at the state theatres of Munich, Dortmund and Braunschweig, the Cologne philharmonie, the Musikfest Hamburg an the Händel- Festspiele Karlsruhe as well as at the Ulrichsberger Kaleidophon. His concert tours led him e.g. to Norway and to Marocco. As a session musician he appeared on a multitude of records and CD's as well as in radioplays and music for movies.

Ulrich Mueller initially was a rock musician, before he studied philosophy, musicology and history of art for a couple of years. After this he took lessions in composition with Klaus K. Hübler / Munich and visited workshops about computer music with Clarence Barlow / Cologne. In the years 1984 to 1988 he took part at the Darmstaedter-Ferienkurse für Neue Musik. As a guitar player and electronic musician he guested - among others - at the Donaueschinger Musiktage, the Ars Elektronika- Centre / Linz and the Künstlerhaus/Vienna. Furthermore he worked in the field of soundinstallation and theatre music (among others for Ruth Geiersberger, Jovita Dermota and Comedia Opera Instabile), was associate at Josef Anton Riedl´s festival Klangaktionen and wrote a multitude of radio essays about classical and contemporary music. 1988 he received the Karl-Hofer-Price from the Universitiy of Arts / Berlin. He taught - among others - at the University of Arts / Berlin and the Academy of Fine Arts / Munich. Today he works also as a curator for the sound gallery "t-u-b-e" / Munich.