Aaah, Lusaka_Guitarist, you ask a truly guitar playing question.
I like Am and G because they're low but have room for lower chords.
It's worth playing in Am just to hit the F to Em in "The Thrill is Gone".
Cm is nice for soloing up the neck and having Fm down there.
It's nice to be able to think in terms of different positions for the same note.
That makes it easier for guitarists to get favorite keys too.
Using tunings is ordinary for guitar, confusing your key question.
And a lot of heavy guitarists still detune for singing and string bending.
Many electric guitarists use pitch-bending and phase shifting devices with loud volume,
to propagate tone zones that defy ordinary musical descriptions of keys.
What's a key when you can't find it singing and a machine gets you there?
Some say we all gravitate to what reminds us of having been in the womb.
Now I'm not sure what my favorite key is.
Oh yeah! Em! That's right, I almost forgot.
I bent allen keys like staples into my one pickup cover, getting another E and D.
So that gives me four octaves of E on the E string.
I've got to love Em, it's loving me back.
