The AACM started in Chicago's South Side in 1965, and the key figure behind it was pianist and composer Muhal Richard Abrams, who had been running a rehearsal group called the Experimental Band. A small circle of musicians — including Jodie Christian, Steve McCall, and Phil Cohran — formalized it into an organization with a name that meant exactly what it said. The idea was straightforward: control your own music, train the next generation, perform in your own venues, and stop waiting for downtown clubs or major labels to validate you. That might sound obvious now, but it was radical then, and the discipline it required was real.

What the AACM produced musically is hard to summarize because the members never agreed on a single sound. Roscoe Mitchell was exploring pure texture and silence. Anthony Braxton was writing graphic scores and naming pieces with mathematical diagrams. Lester Bowie was deconstructing the trumpet with humor and noise. Henry Threadgill was building strange small orchestras. The Art Ensemble of Chicago — probably the most visible AACM group — mixed African percussion, theatrical costumes, free improvisation, and something that occasionally sounded like bebop, all in the same set. None of it sounds quite like anything else, and none of it sounds quite like each other.

One thing that runs through a lot of AACM music, even when it's at its most abstract, is a sense of purpose. These were musicians who took composition seriously, who studied deeply, and who believed that the African American experimental tradition was worth preserving and extending on its own terms. That's different from the New York free jazz scene of the same period, which had its own urgency but was shaped by different social and economic pressures. Chicago's version had a kind of institutional seriousness to it — classes, workshops, mentorship — that kept producing new generations of players.

If you're coming in fresh, the Art Ensemble of Chicago is probably the right starting point. A Jackson in Your House (1969) is a good early document — loose, funny, and genuinely strange. Nice Guys (1978) is more accessible and shows how well they could swing when they felt like it. For Braxton, For Alto (1969) is a solo alto saxophone record that still sounds like it arrived from somewhere slightly outside of time. Threadgill's work with his group Zooid, much later, shows how the AACM's ideas kept evolving well into the 21st century.

The collective moved to New York in the late 1970s and early 1980s and kept going, which is remarkable for any organization of its kind. It still exists, still gives concerts, still teaches. Not every AACM recording rewards casual listening — some of it asks a lot from you — but the ones that click tend to stick with you in a way that more comfortable music doesn't. The reason to care about the AACM isn't just historical. It's that the music still sounds alive.