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Originally Posted by 72FenderAcousticality
... i would like to extend it if i could and ask if anyone could help me do sort of the same thing for the other 6 keys...
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Hi 72FA ...
first of all, there are 12 keys in all, not 6! Sorry about that!
Here are the most guitar-friendly keys:
G: G - Am - Bm - C - D - Em - F#dim
A: A - Bm - C#m - D - E - F#m - Gdim
C: C - Dm - Em - F - G - Am - Bdim
D: D - Em - F#m - G - A - Bm - C#dim
E: E - F#m - G#m - A - B - C#m - D#dim
They can all be written as: I - ii - iii - IV -V -vi -vii
The other 7 keys (G#, A#, B, C#, D#, F, F#) follow the same logic ... they just seem more complicated because of all the extra symbols. You'll see 'flat' keys too, but they are duplicates of the 'sharp' keys ... for example ' G sharp' is the same as ' A flat'.
Here are all 12 notes/keys:
A - A#/Bb - B - C - C#/Db - D - D#/Eb - E - F - F#/Gb - G - G#/Ab ... 12 of them.
You can see that the notes/chords come in alphabetical order. Think of ABCDEF written in a circle. There are #/b notes (and chords) between each letter except E-F and B-C ...
Don't ponder too long over the 'dim' chords, the vii chords ... they're there, the physics of music makes it so, but they come up rarely. Concentrate on the first six chords of each key. They're the ones that you should really know.
You can see already from the abbreviated list above that the same chords turn up in different keys, but never as the same Roman numeral value.
Have a look also at the
Music Building lesson ... I think that may help you to see the bigger picture.