Paul MacKay wrote:
>The second one is a tenor that was engaged to sing the very difficult role
>of Siegfried. He was replaced at very last minute (by Wolfgang Windgassen),
>because though he had the voice to sing Siegried, he was so ill-prepared
>when came the time of recording that Decca was forced to dismiss him.
I heard it was Ernst Kozub. Can't say for sure, of course.
Roger Hecht