This disc of the Audio Encyclopedia focusses on the period of the late 1960's through the 1970's, with reference points in 1952 and 1999. Few of these performances are of the legendary status of early eras, but many offer great performances by artists who deserve to be better known. Note that even when there are commercial releases of productions from this period, the ones presented here have been selected for their unique virtues. Thus, the two 1976 Götterdämmerung performances can be compared with one another and with the composite in video and audio distribution.
| Opera | Year | Conductor | Soloists |
| Der fliegende Holländer | 1976 | Davies | Estes, Salminen, Balslev |
| Götterdämmerung | 1976 | Boulez | Jones, Thomas, Arvidsson |
| Götterdämmerung | 1976 | Boulez | Knie, Thomas, Arvidsson |
| Lohengrin | 1968 | Erede | King, Harper, McIntyre |
| Die Meistersinger | 1960 | Knappertsbusch | Greindl, Windgassen, Grümmer |
| Parsifal | 1971 | Jochum | Konya, Crass, Martin, Stewart |
| Das Rheingold | 1976 | Boulez | McIntyre, Randova, Zednik |
| Siegfried | 1952 | Keilberth | Aldenhoff, Varnay, Hotter |
| Siegfried | 1976 | Boulez | Kollo, Jones, McIntyre |
| Tannhäuser | 1972 | Leinsdorf | Beresford, Jones, Sotin, Weikl |
| Tristan und Isolde | 1970 | Böhm | Windgassen, Nilsson, Hoffman |
| Tristan und Isolde | 1999 | Barenboim | Jerusalem, Meier, Braun |
| Die Walküre | 1976 | Boulez | McIntyre, Jones, Hofmann |
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