[dwringer]

Unfortunately I don't have the full working codebase anymore. Although I think I have enough I could recreate it, it was pretty rudimentary and I've always intended to revisit the idea one day and flesh it out as at least a blog post or something (at which point I will submit it here). I only have a couple of the progressions but they don't mean much on thier own since I hand-picked them out of the result set based on personal taste rather than any formal algorithm.

[p1esk]

I'm curious about your distance metrics for the chords. This problem comes up when trying to constrain the size of a vocabulary for musical tokens.