Die Soldaten
WDR (Westdeutscher Rundfunk) broadcast scenes from "Die Soldaten" in 1963, but the first staged performance, with Cologne Opera forces conducted by Michael Gielen, did not take place until 15 February 1965, after Zimmermann completed revisions to the score in 1964. WDR documented this with a recording, made in sessions on 21 and 22 February and 2 and 3 March in its main studio. In 1969 Gielen also conducted the successful and widely reviewed Bavarian State Opera premiere run in Munich.