I appreciate the feedback and sanity checking!

I’m definitely planning on add a wider array of chords types now that the app is basically working. As far as the 7th inversions, I essentially “ignored” inversions by flattening the notes into a single octave … there may be an issue with this logic.

I came across <https://chord-display.rednet.io> myself yesterday and took a cursory look. Nice app. They use a library called `tonal` <https://github.com/tonaljs/tonal> for their music theory logic, which ought to be a good resource to validate against.