Rather than feeling like the music goes somewhere, this feels like it goes back and forth between places, vast distances, like watching something from another planet slowly hatch open, subdued, but my attention was firmly grasped from the first minute, each little knock and swell feels extremely tense
The third track, “Geologie Sonore” becomes very uncomfortable because it's not as free as the first two tracks. It establishes and settles in one environment, and it sounds quite ominous. The contrast of this suddenly firm hold in place makes the eerieness that much more effective.
If the third track was an establishment of some kind of place, the next track, “Etude élastique”, feels like hearing what lives there and the sounds that they make from moving around in this unsettling place.
The fifth track, “Conjugaison du Timbre”, feels a lot more uniform with the saxophone doing most of the work over the droning synths. I like to imagine after the initial chaos of discoveirng what lives here, you take the time to observe them and see that there's more to them than you first gave them credit for, you hear them harmonize and sound out some kind of song, like there's some sophisticated form of communication that they use.
From the first track in the second “series”, I'm getting that impression of travel again, along with radio communication. This one sounds the warmest on the album so far, given the electronic blips and beeps sounding familiar to what we hear in technology, along with the occasional sound of running water.
The sampled sounds of running water are harmonized by instrumental equivalents, such as twanged and slapped strings and more synthetic plunks in “Matières induites”.
This whole second “series” is reminding me of water. Like some sort of enormous cave with water running through it.
That's all I can think of. I can't imagine going back to listen to just part of it, it's gonna have to be the whole thing. Wonderful album.