[bibanez]

It seems it gets the best results when you give it a melody. Pretty impressive nonetheless. I wrote a terrible script [1] a few years ago to do similar chorale harmonizations. I guess this is the year when most of my old projects get an AI version that completely outclass them ;-(

[1] https://github.com/bibanez/harmonizer

[fagerhult]

I'm sure your script runs a lot faster than my model :D A well-tuned heuristic script can probably do as good harmonizing as any black box deep learning model. I was mostly just curious how diffusion models would handle symbolic music data. This model does reasonably well on short time scales but has no idea about long-term context.