Helmut Bieler-Wendt

Contemporary Four 1980's compositions for two cellos by three German contemporary composers, including Feedback Studio founder and Stockhausen collaborator Johannes Fritsch, performed by Biruta Aļļe and Michael Bach, released by Pro Viva in 1989 and never re-issued on either LP or CD.music for brass by the four Czech composers, released on Supraphon's Musica Nova Bohemica contemporary music series in 1986. Never re-issued on either LP or CD.