why chord_set must be 3 or 4

[Altheim]

I try to use another mid to replace mid in demos lead sheet,but found that chord_set must be 3 or 4 which most mids can not satisfy,can it be improved?

[zhaojw1998]

I try to use another mid to replace mid in demos lead sheet,but found that chord_set must be 3 or 4 which most mids can not satisfy,can it be improved?

We limited chord_set to be 3 or 4 because the training data of our re-harmonization model have mostly triad and seventh chords. I have modified the code so that it also supports more complex chords. But if it's too complex, the generated results might fail in harmonization. Hope this helps :)