Seventh goes downward rule is missing on "viio" chords about harmony HOT 2 OPEN

Ah, I agree that seems a little awkward. Thanks for the expert feedback. I think large jumps (of > 7 semitones) in the bass are penalized, but maybe by not enough?

Have to think more about the fa->mi resolution in vii->I.

from harmony.

Yeah, currently the policy is to penalize large jumps.

In practice, jumps are tricky. An augmented second is a relatively short leap (same as a minor third) but several harmony books forbid them (has to do with melodic and harmonic minor scales). Leaping an octave (especially in the bass) is totally fine, but sevenths are strictly forbidden by several theorists (basically because they're difficult to sing, or so they say). So, these weights need some fine adjustments additionally to keeping jumps short.

I'll try to think of something too, and maybe make a PR with the suggestions.

from harmony.