From Chicago Tonight:
How did the Association for the Advancement of Creative Musicians originate?
It was a natural progression of musicians doing their thing and working, and the AACM was to do it in a certain way. It was just a continuation of what musicians do. We’re functioning as musicians and decided to make a formal setting for it. Musicians function as individuals, and we just came together to compose and perform original music, and that is the music that would come from the members of AACM.