Setting melody/bass?

[xhevahir]

I'm wondering if one could set a fixed melody or bassline and generate a voice leading that's congruent with it. I was reading on the Google OR-Tools site about constraint programming problems but it's all Greek to me so far. Any ideas whether this is feasible?

[napulen]

It is possible. I started by fixing the initial and last voicings (in a vertical way):

romanyh/romanyh/voicing.py

Line 422 in 34bc75d

if i == 0 and firstVoicing:

It's all about constraining the number of combinations you can validate the rules against.

I don't see any reason why melodic constraints (on a horizontal way) couldn't also be included this way.

e.g., if my melodic line says the bass plays C4 in this chord, I prune all the combinations where the bass is C3 or C2, etc.

It's just a hassle to implement it the way I am doing it. Maybe there is a smart way of doing it, like the OR-Tools you suggest. I didn't know about these libraries, thank you for the reference.