There are certain intervals that are basically mappable by how universally pleasing they sound (it’s got to do with relative frequencies, I know it starts with octave, then 5th, and after that I get less sure), but the same can’t really be said for chords. Chords are all about context, [Adam Neely](https://youtu.be/lz3WR-F_pnM) and [Jacob Collier](https://youtu.be/EWHpdmDHrn8) have great videos that come at it from different directions.
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