Chords In A Key (Diatonic Triads)

Music Theory Chords In Keys & Common Progressions
21

@LamphunLamyai Daniel - you’ve been doing some chord and music analysis which is great.
I’m unsure what your thoughts are in terms of creating the circle of fifths. If you are jumping from root to 5th of those triads (C, Dm, Em etc) then I’m sorry to say that is not quite right.

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You do get a series of notes C → G → D → A → E → B that match a group of notes around the C of 5 but your pattern then leaps to the note F which is on the opposite side of the circle. Then your pattern repeats.
I explain how it is created here - though it is, admittedly, a long read.

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22

would it be possible to elaborate on how it clicked when playing around with the solo from Fade to Black by Metallica. How all the theory, chords, everything fit together in that example?

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23

my take home message, at least I understand now how the chords build up between major and minor along scales (here the combined C major and A minor)

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25

In the d scale. The 3th trap i come to f#ac. But that is not a minor derived from fac…

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26

@Freek77

D major scale using T-T-S-T-T-T-S

D, E, F#, G, A, B, C#

Going in thirds from the third scale degree gives:

F#, A, C#

27

Ok thanks Richard but in my opinion the major triad is FAC.

So i thought that FAbC would be the minor form but that is nowhere to be found in the d major scale. I think i am missing something here. Thanks

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28

The F major triad is F, A, C.
You have that correct.
And Fm is F, Ab, C too.

But neither are diatonic to the key of D major. In that key, the alphabetical note name with letter F is the third scale degree of F# and the diatonic chord is F#m.

29

Thanks. I got it now.

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