There is a particular kind of place that modern cities produce almost by accident: neither countryside nor city, neither destination nor ruin, neither properly inhabited nor entirely abandoned. A harbour edge after the workers have gone home. A strip of concrete beside the water. Machinery humming somewhere beyond a fence. Insects continuing their microscopic business while humans build another warehouse. These are the spaces that French urban theory calls "terrain vague", and they are precisely where Mesmer have chosen to listen.

The Danish trio of Emil Jensen, Victor Dybbroe and Anders Filipsen has been working together for more than fifteen years across music, film, radio and installation, although Mesmer itself only emerged as a recording project in 2023. Their debut, "Terrain Vague", grew out of field trips around Copenhagen and deconstructed live performances; "Terrain Vague II" takes the original premise and pushes it considerably further into specific places and their acoustic identities.

The difference is important. This isn't an album that merely adds environmental recordings to music, as though a harbour crane were just another fashionable percussion sample waiting to happen. Here, the recordings constitute the material from which the music grows. Læsø, Frederikshavn and Aalborg are not picturesque postcards pasted behind an electro-acoustic composition. Their machinery, water, wind, boats and peripheral noises become structural elements, around which Jensen's trumpet and modular electronics, Dybbroe's percussion and Filipsen's synthesizers negotiate their positions.

And negotiation is probably the key word.

The opening “Lodsbåd / Vind&Maskiner / Insekter” immediately establishes a curious coexistence between the organic and the industrial. There is movement, but not necessarily progression in the conventional musical sense. Sounds emerge, overlap and retreat, creating the impression that several different clocks are running simultaneously. The title itself reads almost like a field notebook: pilot boat, wind and machines, insects. Human civilisation gets three nouns; nature gets one. Nobody appears particularly impressed by our achievements.

What makes the piece effective is the way Mesmer refuse to establish a clear hierarchy between these elements. A trumpet tone can be as environmental as a distant engine; a mechanical pulse can acquire the intimacy of breathing. The result is neither conventional field recording nor conventional composition, but something closer to acoustic ecology translated through improvisation.

“Sejlturen til Læsø / Salt&Kompressor” develops this tension further. The sea is present, but not romanticised. There is little of that familiar ambient-music fantasy in which every coastline apparently exists exclusively for people wearing linen trousers to contemplate their mortality. Mesmer's Læsø has compressors, machinery, salt, human activity. The landscape is beautiful precisely because it isn't pristine. This is where the trio's long shared history becomes audible. Their collaboration has been recognised with two Danish Music Awards and has extended into installations and museum projects, and there is a palpable confidence in the way they allow one another's material to remain unresolved. The musicians don't sound like three individuals waiting for their turn. They sound like three systems constantly adjusting to one another.

“Fløjten / Budolfi” is perhaps the clearest example of that collective intelligence. The trumpet doesn't function simply as a melodic protagonist. It becomes another acoustic surface, sometimes recognisable, sometimes absorbed into the surrounding electronics and recordings. There is an intriguing ambiguity about what is actually being played and what has been captured. The ear keeps trying to separate source from transformation, and repeatedly fails. That failure is productive.

One of the album's most attractive qualities is precisely its resistance to forensic listening. You can analyse the techniques, identify instruments, speculate about processing, follow the geography, but eventually the music asks you to stop being an investigator. The environment becomes compositional material, and composition becomes a way of paying attention to the environment.

Then comes “Trompet&Propeller”, barely over two minutes long, and it behaves almost like a miniature laboratory experiment. Brass and machinery occupy the same sonic frame until the distinction becomes delightfully unstable. It is short, sharp and slightly mischievous, a reminder that Mesmer aren't interested in turning "Terrain Vague II" into a solemn academic exercise about spatial listening. There is playfulness here, even when the conceptual framework sounds as if it might have been assembled during a particularly ambitious symposium.

The closing “Under Limfjorden” is more submerged in character. The title suggests descent, and the music seems to respond accordingly, allowing textures to become denser and less immediately identifiable. The sense of location remains, but geography has started becoming psychology. The physical environment is no longer simply somewhere "out there". It has entered the listener.

This is where "Terrain Vague II" distinguishes itself from much contemporary ambient music. Its slowness is not synonymous with passivity. There is an active tension throughout these five pieces, generated by the relationship between composed structures and improvisation. The trio explicitly describes the album as a development from the first "Terrain Vague", with sharper contrasts, a stronger role for improvisation and a more pronounced tension between individual and collective action.

The music consequently never settles into the decorative serenity that sometimes afflicts environmental electronica. It can be meditative, but it isn't wallpaper. It asks the listener to notice things.

That sounds modest. It isn't.

Modern life has become extraordinarily good at destroying our capacity for noticing. We walk through cities while staring at miniature rectangles, wearing headphones that promise to isolate us from precisely the world we inhabit. Mesmer's response is almost perversely simple: listen to the place. Listen to the machinery. Listen to the wind. Listen to the spaces between sounds. Listen to what happens when three musicians stop treating the environment as background and allow it to interfere with the composition.

The concept of "terrain vague" is therefore more than an aesthetic label. It becomes a useful metaphor for contemporary existence: transitional, unstable, full of spaces whose purpose hasn't yet been decided. Mesmer don't attempt to fill those spaces with answers. Instead, they make them audible.

There is something quietly political about that. Not political in the sense of slogans or declarations, but in the insistence that attention itself matters. To listen carefully to an overlooked place is already to reject the idea that only productive, spectacular or commercially useful environments deserve consideration.

The album's physical modesty helps. Five tracks, roughly thirty-five minutes, no bloated conceptual universe requiring a PhD and a small grant application to enter. Just enough material to create a world and then leave it slightly ajar.

Mesmer's greatest achievement here is perhaps that they make "place" feel less like a subject than a collaborator. Læsø, Frederikshavn and Aalborg aren't being represented. They are participating. The musicians listen, respond, distort, layer and improvise, until the distinction between composing "about" a landscape and composing "with" it becomes increasingly difficult to maintain. The project has also expanded beyond the album into concerts and sound installations, reinforcing this idea of music as something spatial rather than merely recorded.

"Terrain Vague II" ultimately doesn't ask us to escape the world. It does something more difficult: it asks us to hear the world we already have.

There are propellers, compressors, insects, trumpets, wind and machinery. There are places between places. There is no grand resolution, because the terrain remains vague.

Perhaps that's the point. The future, like a Danish industrial coastline, is full of strange noises and poorly marked paths.

Best to listen carefully before building another shopping centre on it.