Codeine recorded their debut album in a ground-floor apartment in Brooklyn over two weekends in the summer of 1990, and the music they made there still sounds like it was recorded somewhere you are not supposed to be. The album was called “Frigid Stars LP,” and it is the quiet ground zero of American slowcore.

The band was three people: Stephen Immerwahr on bass and vocals, John Engle on guitar, and Chris Brokaw on drums and guitar. Their producer was Mike McMackin, who also engineered the sessions. By Immerwahr’s own account, the band had played together only a handful of times before they walked in. Side one was recorded in June, side two in August. The album appeared on the German label Glitterhouse in 1990 and on Sub Pop in the United States in February 1991, and it arrived with almost no fanfare and a sound that seemed to be actively resisting attention.

The opening track is called “D.” It lasts four and a half minutes and does not hurry. What follows it, “Gravel Bed” and “Pickup Song,” maintains the same unhurried logic. The tempos are not slow for effect. They are slow because the songs seem to require it, the way a long exposure requires stillness. “Cigarette Machine,” later in the record, is the closest thing to a lurch, and even that feels considered. The whole album operates at the pace of something being remembered rather than performed.

The word “slowcore” did not exist yet, or barely did. The first documented use of the term in print appears in Chuck Eddy’s 1991 book “Stairway to Hell.” What Codeine were doing had no agreed-upon name, which is often the sign that something is actually new. They were drawing on the quiet-to-loud dynamics that Slint was developing at roughly the same time, but where Slint built toward rupture, Codeine stayed in the tension. The rupture, if it came at all, was internal.

Red House Painters arrived from a different direction and landed in adjacent territory. Mark Kozelek had formed the band in Atlanta in 1988 with drummer Anthony Koutsos, then relocated to San Francisco in 1989, adding guitarist Gorden Mack and bassist Jerry Vessel to complete the lineup. Their demos caught the attention of Ivo Watts-Russell at 4AD, and the band debuted in September 1992 with “Down Colorful Hill.” Where Codeine were terse and compressed, Kozelek wrote long. The title track of that debut runs nearly eleven minutes. The songs felt like confessions that had been sitting in a drawer for years.

Low came out of Duluth, Minnesota, which is a detail worth sitting with. Alan Sparhawk and Mimi Parker formed the band in 1993, recruiting bassist John Nichols to complete the original trio. Parker played a drum kit stripped to its essentials: a single snare, a single cymbal, a floor tom. Their debut, “I Could Live in Hope,” appeared on February 18, 1994, on Vernon Yard, and it did something the earlier records had gestured toward but not quite achieved. It made the space between the notes feel inhabited. The harmonies Sparhawk and Parker sang together were close and slightly unsettling, the way two people who know each other very well can sound when they are not quite saying what they mean.

These three bands did not form a movement in any organized sense. They did not share a city, a label, or a manifesto. What they shared was a refusal to perform urgency. In a moment when American indie rock was still processing the aftershock of Nevermind, that refusal was its own kind of argument. Loud music was everywhere. Quiet music that meant it was harder to find.

The genre they helped establish has had a complicated afterlife. Slowcore became a critical touchstone, then a streaming-era rediscovery, then a template for a generation of bedroom producers who found in its spaciousness something that translated well to headphones and late nights. The influence is audible in artists working now who may not know the name Codeine at all.

Low’s story ended in November 2022, when Mimi Parker died of ovarian cancer at 55. She and Sparhawk had been the band’s constant core across 13 studio albums and nearly three decades. Low disbanded following her death. The tribute album “Your Voice Is Not Enough,” released in May 2024 on The Flenser, collected covers of Low songs by artists including Midwife and Drowse, and it served as a kind of public accounting of how widely the band’s influence had spread.

Kozelek eventually dissolved Red House Painters in 2001 and continued under the name Sun Kil Moon, which he has described as essentially the same project with a different name, aimed at critics who had stopped paying attention. Codeine reunited briefly in 2012 for a tour, with their final reunion show at Le Poisson Rouge in New York on July 15, 2012. In 2022, the Numero Group released “Dessau,” a Codeine album recorded in 1992 and shelved before it could come out, a ghost record that sounded like “The White Birch” seen through warped glass.

What all of this adds up to is a body of work that has aged better than almost anything louder from the same era. “Frigid Stars LP” still opens with “D,” still recorded in a Brooklyn apartment, still not in any hurry. That turns out to be a durable quality.