Hi Richard,
I was practicing triad grips on strings 1, 2 & 3 today. I was playing a 1-6-4-5 progression in the key of G (G Em C D). I noticed when going from Em using grip 2 to C using grip 3, I only had to move the finger on the G string up a fret to make the chord change.
That got me thinking and I “discovered” that if you flatten the root of a major triad you get a minor triad whose root note is the third of the major you started with. For example, flatten the root of a C major and you get an Em. F becomes Am.
These major/minor pairs also have two notes in common. So are these minor triads a different type of relative minor? Or is my “discovery” purely academic and useless in the real world?
The attached table shows the major vs relative minor relationship you mentioned on the right hand side, and the major/minor relationship I “discovered” on the left hand side.
