there's not a lot for them to sing. Melodies are in short supply so it's no surprise that this opera is rarely heard. The absence of arias and duets guarantees obscurity. Like Pelleas and Melisande, the opera is a nearly nonstop sequence of sung dialogues. You could say that allows uninterrupted drama to flow without characters just stopping to sing. Most people like to hear great voices singing regardless of whether or not it furthers the drama. Van Dam has many fine moments but the numerous other great lyric voices in this recording don't have much to do. The first 3/4 of Oedipe sounds mostly like Wozzeck with a bit of Bluebeard's Castle. And then in the end the music settles into more of a Pelleas sound with some Oedipus Rex. If you love Van Dam then this recording is worth a listen. But if you're looking for great vocals from Hendricks,Bacquier,Aler,Fassbaender,Quilico or Gedda you may be dissappointed.