As for the ii chord being minor I used to teach guitar and always started off with a keyboard demonstration in C playing the notes in triads - play one, skip one and add, skip another and add - e.g. C E G. So I got C F and G major and D E and A minor.

That showed how any note in the scale could be harmonised with either a major or minor chord and why most folk or pop songs only used three chords. Extremely basic but started students off with an insight that just playing chords or melodies didn't give.
I once played with a keyboard player who read the dots and played well but when told to vamp on an F chord had no idea what to do.
It also showed how strange the diminished chord starting on B sounded!

Last edited by Bob Calver; 03/28/23 10:42 PM.