Side one is beautiful orchestration that slowly and seductively leads to tension that is released little by little. Pierre Boulez's conducting the orchestra and György Ligeti's intense score is an amazing listening experience. His music seems to hold energy into a small space, and once it dispels into the ears or listening room, it's a release that is almost sexual. The harpsichord comes in and out of the orchestration or mixes in a very efficient manner. Great music.
Side two is "Nouvelles Aventures," and it's mostly vocal work with a touch of instrumentation here and there. Again it's a tightly held piece of intensity which keeps the listener on their toes. DADA or Letterist like in performance, I have a feeling that there is a visual side to "Nouvelles Aventures."