I recently borrowed the Klemperer/Ludwig version (which so many Amazon reviewers rate so highly) of "Fidelio" from a local library. As I was listening along, I wondered if I'd like this opera at all. I'd seen a video of "Fidelio" several years ago, (I don't remember who conducted it) and remember liking it. But listening to Klemperer's, I was no longer sure. Klemperer, for whom I often have respect, conducted the Overture like it was a Big Band tune. When the singers came in, the orchestra was drowned out, with the voices dominating. Christa Ludwig, whom I usually enjoy for her mellow richness, sounded shrill in this role. The sound quality was also rather flat, with a constant tape hiss. I frankly expected that recording to be much better.
Deciding to compare versions just to make sure it wasn't the opera itself, I downloaded "Mir ist so wunderbar," of this Karajan/Dernesch version. I sat listening, closed my eyes and shook my head. Now THAT is how an opera should be played, I said to myself. Got to give it Karajan for knowing how to pull off richness and intensity in an opera that could otherwise be too light and repetitive. The orchestra began clear and rich, building intensity until the sopranos came in, softly and gently, then clearly and beautifully. I was hooked. I downloaded the whole thing, and wasn't disappointed. The sound quality is flawless. The conducting is beautiful, never making it sound like a "night at the pops," or a Mozart minuet, but rather a full dramatic opera composed by the great Beethoven. Each of the singers is perfect for their roles as well, as far as I'm concerned.
There is the trouble another reviewer mentioned, of the distant quality of Dernesch's voice in one or two of the tracks of the dungeon sequence in the second act. It sounds like her voice is echoing from an adjacent room, instead of right by Vickers's side as she's supposed to be in the scene. But that's the only fault with this otherwise marvelous recording, and I wouldn't give this any fewer stars for it.