I've been reading tons of piano stuffs from kid days and I approximated the concept to these:
using the number system
1 major
2 minor
3 minor
4 major
5 dominant
6 minor
7 half dim
Now these are the usually chords to be played on these scale tones, although altered chords spice up the whole concept a little.
I wanna know for each pianist what exceptions u apply to your playing.