The root note is a E minor chord. When you play the root note in a major scale (A minor), you’re not playing the same chord, just the same scale!
A major is the root note in Bb major, the second chord in a G major scale.
That means, in the A section, the root note is not major, so if you play that chord, the Bb is still a minor chord!
But in the G section, you’re playing a major chord!
There’s one other key to understanding scales: The 1/8 scale!
The 1/8 scale is actually 1/32 of a bar, or about 17.5% of an octave – that’s very similar to the 1/4 and 2/8 of our G Major chord.
The key difference is that 1/8 is always a whole number; one bar is one octave.
In A major, this means the root is at bar 24, the 2nd at bar 28, and the 3rd at bar 49.
So every 1/8 beat in a bar is 1/32 beat!
If you play A minor at bar 31, the 1/6 is one beat higher than the root (one beat higher than bar 32).
So you can see how one beat (1/32) of a bar is different than our 3 beats per 2 bars (2/16).
Notice the 4th in the same bars that you played the F chord is a whole 7 (which could be a F or B).
The root note in the major scale in B Major is A major, so the 1/8 of that bar is one bar lower than the root, but still one beat higher than bar 24.
The same root note in a G Major scale is G major, and as the 1/8 of the bar is not a whole number or 1/32 of an octave, it has 1/8 of that bar as a whole number.
So every 1/8 beat in a bar is 1/1 beat.
That’s what the 1/8 scale is!
The 1/8 scale is called A, which means the root note is E in Bb major. So you wouldn’t play the root note any major chord for a 1/8 rhythm line.
Your guitar pro might want to know a little more