Anyone who’s studied meditation or watched a Formula 1 race knows you can travel great distances without going anywhere at all—and enjoy the process of not getting there. There’s pleasure in following a circuit so frequently and so closely that everyday bits of the landscape become landmarks (we always pass that bullet-holed stop sign on this route) and a pang when those landmarks change (they replaced the stop sign!). Natural Information Society’s music operates on similar principles, drawing together the thrum of Moroccan gnawa, the austere profundity of Philip Glass, and the circular structures of John Coltrane at his most spiritual into a sound that doesn’t progress so much as it rotates. Its pleasures come from the steady accumulation of repetitions and all the little tweaks and evolutions and devolutions that composer Joshua Abrams and his band have built into their music.

Perseverance Flow is Natural Information Society’s first non-collaborative record since 2023’s jazz-fractaled Since Time Is Gravity. That album presented a more relaxed version of the group, unfurling its music as though rolling out a dusty Turkish carpet. Perseverance Flow’s tight focus—one theme looped ceaselessly, with modest embellishment, for 35 minutes—feels like a microscopic view of that same rug. The phrase is initially tight and loping: a two-note harmonium riff, a lightly heraldic bass clarinet, Abrams’ clip-clopping guembri, a little one-two drumbeat, all of it held together as tightly as pencils bundled by a rubber band. The group performed the piece live for a year before recording, which gives the album a warm and lived-in feel despite its formal constriction; imagine the Sun Ra Arkestra in big-band mode, playing a single bar over and over until achieving liftoff. Taking equal inspiration from Jamaican dub and Chicago dance music, Abrams edited the one-take performance in post-production, dropping in tonal tweaks and rhythmic inversions with a jeweler’s eye for detail.

In the same way that a diamond’s symmetrical shine is both easy to admire and requires an eyepiece to appreciate in full, Perseverance Flow’s charm is shaped by the tiny variations built into the score. Once the theme is established and allowed to settle, harmonium player Lisa Alvarado flips her pattern, playing a palindrome of the simple rise-and-fall melody. The shift is so smooth it can take a moment to notice it’s happened, and even then you might second-guess the extent of the change. Drummer Mikel Patrick Avery loosens his percussion a few minutes later, playing something that sounds like pebbles sloshing in a plastic bucket. The soft shuffle is soon absorbed—whether actually or just by a kind of aural illusion—into the original pattern. Abrams anchors the sound with his Moroccan guembri, occasionally halting the steady limp of the primary line to tie a fluid knot without losing a step.

While it’s not unusual for repetition to turn a musical phrase inside out, similar to the way a word loses its meaning once you’ve said it a few times, Perseverance Flow’s emotional register stays constant. The phrases gradually begin to lengthen—at one point, Alvarado’s harmonium sounds more like an accordion playing a Cajun song in slow-mo—which gives the piece enough momentum to stay grounded. At no point does it even glance in the direction of chaos; you could probably thread a needle with the sound wave. Around the 19-minute mark, the entire ensemble pulls up together in a way that suggests a vamp, then immediately falls back into the pattern without anyone losing their place. It’s such a weird little thrill that, if you’re properly locked in, it feels like peaking in sync with a 2 a.m. bass drop.

While the instrumentation wouldn’t be out of place at your local roots festival, the dance music influence on Perseverance Flow is undeniable. Abrams’ frequent switches and intertwined notes mimic the braided bass hits and glitchy rhythms of footwork without ever leaving the aesthetic context of gnawa. Little clap-back rhythms pop up occasionally. At one point, something that sounds like a bag of shells being dropped on a snare drum introduces a new back-and-forth to the theme that matches the harmonium and brings the piece’s shuffle closer to something like hip-hop. It’s a canny way of making sure the listener’s body stays tuned in to what could easily become cerebral; you will not nod your head more insistently to a piece of experimental music this year.

Two-thirds of the way through, Avery pounds what sounds like a heavily padded kick drum in double time, just off-beat and distant enough to make it feel like the thump of a poorly insulated club. Abrams picks up the new rhythm and follows it, and for a few moments, the band seems to be playing both the main Perseverance Flow theme and a separate dance song at the same time, though the theoretical line between the two is impossible to find. Eventually, that intervention fades, too, revealing that each of the musicians is off doing their own thing, and despite that, feeling more like an ensemble than ever.

Music like this sometimes gets called “durational,” or likened to the theoretical impermanence of Zeno’s Arrow—an object that appears constant yet is recomposing itself in every moment. It is hard, listening to Perseverance Flow, not to think of the Buddhist notion of becoming, or something like philosopher Henri Bergson’s conception of the élan. Both of which are fair descriptions and logical reactions to a music that seems to do nothing but go in circles with academic confidence. But merry-go-rounds go in circles, too. As do pinwheels. You want durational? Major League Baseball teams play 162 games every season, usually for the same few thousand people. Despite the weight of the intellectual concepts and the elegance of the score, despite the band’s association with the cream of Chicago’s always-rich avant-garde scene, this record is no less approachable than an afternoon Cubs game. Appropriately enough, it gets better with each spin, too.