The title of this work refers to the notion of fluctuation animi that Spinoza developed by linking it to the notion of affect. The simultaneity of opposite affects induces a rearrangement, but also a conflict within the psychic dynamics.

Fluctuatio(in)animi is the first part of the cycle Psyché-Cité / Transversales, which aims at developing a psycho-geology, a sound system that works like a mutant organism at the crossroads between the psychic and the urban. It includes heterogeneous materials (instrumental and sounds of the subway presenting a mechanical character) in a plastic fabric that is in constant evolution and goes beyond categories.

The whole piece is based on the dialectics between a mobile architecture of all these sounds, which live in an anarchic way under the city, underlining their poetic strength, their almost living appearance, and a sort of inarticulate and closing speech, that of the beat, the repetition, inexorably stuck to the mechanized sounds.

Oscillating between this process, which is likely to mobilize new circuits, and a blocking movement which revolves around itself and cannot escape from the return to the same center (and here, the metaphor of the machine takes its full meaning), the piece raises the question of the difficulty of a true freedom, which, avoiding any automatism, would be characterized by the capacity to continually invent new ramifications.