When last I worked on Après-mystère, I wrote three measures of canon, and stopped because, in even so short a time, I created a problem. Properly speaking, I stopped at a point where I dropped the strictness of the canon, to avoid the problem. I left the problem unaddressed for a few days, partly because of my schedule. But the more artistic reason was that I was dissatisfied with dropping the canon so early on.
This morning, I fixed that problem and then wrote a further twenty-three measures of canon.