The original impetus for the ensemble's founding, however, was an appearance by Alfred Deller at the Cologne Courses for Early Music, and the group has always performed both early and contemporary works (Fuhrmann 1986).
Though the 1968 "Paris version" used by the Collegium Vocale Köln at the world première has been published (as No. 24½ in Stockhausen's catalog), the 1977 "Singcircle version" (directed by Gregory Rose) has been well documented in Rose and Emmerson 1979, and both versions have been performed throughout the world.
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Collegium Vocale Köln: Dagmar Apel, Gaby Rodens, Helga Albrecht, Wolfgang Fromme, Georg Steinhoff, Hans-Alderich Billig (recorded 1969).
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Stimmung, for six vocalists and six microphones, is a piece by Karlheinz Stockhausen, written in 1968 and commissioned by the City of Cologne for the Collegium Vocale Köln.
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