I haven't finished reading whole interview/discussion, but to bridge Coleman's treatment of improvisation vs composition over to the software domain: the "philharmonic" wanted a "waterfall" version of music composition, where everything was written down in advance and completely choreographed, with no notes, chords, phrasing, tempo, volume, tone left to chance; this upset Coleman, who believed in a more "agile" version of music. In Coleman's life in the jazz community with jazz musicians, he said he'd rehearse to review brand new pieces with them and lay down the framework; in the second rehearsal, the other musicians would riff on the themes, find new things to say, fill in the gaps. The jazz performances would work out just fine, just-in-time, like "agile". The classical "philharmonic" musicians couldn't relate to this at all.