Stephen O’Malley deciding to write for pipe organ feels less like a stylistic pivot and more like an inevitability. After years spent bending amplifiers into monolithic drones with Sunn O))), moving into a cathedral and letting the building itself do the amplification was probably the next logical step. Why carry the weight when the architecture can do it for you.

"Spheres Collapser" is, on paper, disarmingly simple: two long-form organ pieces, recorded in a Swiss church, performed alongside Kali Malone and Frederikke Hoffmeier. In practice, it’s about as subtle as tectonic plates shifting under a marble floor. The pipe organ - specifically the sprawling, historically layered instrument at Église Saint-François in Lausanne - becomes less an instrument than a system of pressure, air, and time. You don’t “play” it so much as initiate a process and then wait for the consequences.

O’Malley’s compositional language hasn’t changed as much as it has migrated. The same obsessions are here: duration, density, the slow revelation of harmonic overtones that feel less written than uncovered. If you’ve followed his work with Khanate or his various electroacoustic collaborations, you’ll recognize the patience. What’s different is the medium’s refusal to be rushed. The organ breathes on its own terms, and the room answers back.

“Phase I” unfolds like a negotiation with gravity. Low frequencies gather in the nave, thickening the air until it feels almost tactile. There’s no dramatic gesture, no obvious narrative arc. Instead, sound accumulates, layer by microscopic layer, until you realize the piece has quietly reconfigured your sense of scale. Time stretches. Listening becomes less about following and more about enduring, or maybe inhabiting.

Kali Malone’s presence is not incidental. Her own work with organ minimalism has a reputation for turning austerity into something strangely luminous, and here that sensibility seeps into the performance. The tones are not just heavy; they’re precise, almost surgical in how they occupy space. Frederikke Hoffmeier, better known in other contexts as Puce Mary, adds another layer of tension - less visible, perhaps, but felt in the way the sound resists settling into pure consonance.

“Phase II” doesn’t so much continue as deepen the descent. If the first piece establishes a gravitational field, the second explores what happens when you stop resisting it. Harmonics begin to shimmer at the edges, like light caught in slow motion. There are moments where the organ seems to fracture into smaller particles of sound, only to reassemble into something even more imposing. It’s not dramatic in the cinematic sense. It’s geological. Change happens, but on a scale that makes human impatience look slightly ridiculous.

The origin of the material - part of a larger suite created for choreographer Cindy Van Acker - lingers in the background. You can almost sense the phantom of movement, the idea that bodies once interacted with these sounds. But stripped of that visual component, the music stands as a kind of architectural study. Sound shaping space, space reshaping perception.

What’s quietly fascinating is how little O’Malley seems interested in transcendence here. The pipe organ, with all its ecclesiastical baggage, practically begs for spiritual readings. Instead, "Spheres Collapser" feels grounded, even physical. Air moves through pipes. Frequencies collide. The room vibrates. If there’s anything sacred, it’s the mechanics.

This is not an album that meets you halfway. It expects stillness, attention, and a willingness to let go of the idea that something needs to “happen”. For some listeners, that will translate to profundity. For others, it will feel like being politely crushed by a very patient machine.
Either way, "Spheres Collapser" does what O’Malley has always done, just with bigger lungs: it stretches sound until it stops behaving like music and starts behaving like an environment. And once you’re inside it, leaving feels slightly theoretical.