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La Gazza Ladra (Cologne Opera) (1987)
directed by Michael Hampe
featuring Brent Ellis, Ileana Cotrubas, Carlos Feller, David Kuebler, Alberto Rinaldi -
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Il Barbiere di Siviglia (1988)
directed by Claus Viller, Michael Hampe
featuring Cecilia Bartoli, David Kuebler, Gino Quilco, Carlos Feller, Robert Lloyd, Klaus Bruch -
Ludwig Van (1970)
directed by Mauricio Kagel
featuring Joseph Beuys, Günther Beohnert, Carlos Feller, Werner Höfer, Mauricio Kagel