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- Giant rectangle cube following balls that tells you name of chord - G7 Dominant
- Use tonal lib: Chord.detect(["D", "F#", "A", "C"]); // => ["D7"]
- Chord.name for display name, .symbol for shortname
- Push notes into nextNotesArr while length less than or equal to 4 call Chord.detect, if - no chord returned drop single ball, if True, then drop Rect with note names
- Only push notes, when played quickly ticks
- Call from addBody with setTimeout for balls so there is time to calc chord