Is there a quick rule-of-thumb for finding negative harmonies?
Usually they are explained by drawing a circle of pitches and pairing them by lining up the 'positive' and 'negative' pitches. But this needs a diagram. How does one quickly decide the negative of, say, the supertonic chord without having to draw a diagram?
I suspect this may turn out to be a very naive question.
EDIT: I presume the downvote is for not explaining negative harmony. I felt it unecessary to do so (since only someone who knows it can answer and youtube is awash with vids), and impractical, (since I barely understand it.)