I can see Gordon's point esp. when taken in context of the way the O/P is thinking about notes.
Lets imagine that the song is in the key of C. The 6th is an A.
Now the user finds a chord listed as A-minor. That user still uses the key signature as the note identifiers. They therefore identify Am as being notes: 6, 1, 3

(BTW: That's not how many/most of us think about chords, probably because we already know the chords and don't have to translate anything into "note numbers" to know how to play them)

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