A gala concert celebrating the 25th anniversary of the Lyric Opera of Chicago was given on October 14th, 1979.
The participating conductors were George Prêtre, Nicola Rescigno, Riccardo Chailly, Bruno Bartoletti, Sir John Pritchard, and Krzysztof Penderecki, and the line-up of singers was impressive indeed.
Listen here.
Oberon's Glade 