And here I am picking the flyshit out of pepper...
Like I said, advanced knowledge is knowing the difference between a Bb and A#.
Not to offend, but what you wrote is NOT advanced knowledge, Angler. It's QUALITY knowledge, for sure. We are NOT violin players, nor Balalaika players. (both need different approaches to temperament)
The circle of fifths is a great thing to know. It's the backbone to guitar music.
Fmaj=Dmin is fine. Move your "Box 1" up three frets or down three frets...
But...
https://en.wikipedia.org/wiki/Musica...forte%2C%20etc.
OP, Have you ever noticed that when you tune your guitar according to your tuner, that if you play a standard open 'G' it sounds good, but when you play an E major, the G string sounds off? Now you fiddle fuck it to sound "okay" in both chords? That's temperament. Bb does not equal A# on a fretted or keyed instrument. It's an "average." In that particular case of G maj vs E maj, a G note open and a G# note fretted are dissonant in one of the chords.
THAT is advanced knowledge.
SRV turnarounds sound awesome. He bends and plays chromatic notes like no other... Best. Ever. Guitar. Player. But his speed is the fix of the temperament. Texas Flood at the El Macombo is the bestest guitar performance, ever.
But there just are three Kings. Albert, B.B., and Freddy. THEY played temperament. They played fewer notes than what is now considered a "good" guitar player, but they nailed the temperament with their slow bends.
https://youtu.be/N03FV1QQCwA
Their slow bends were the precision between 466 Hz and 463Hz. A# vs Bb