Here is a response to a question about the Project X guitar course and the demonstration by Keith of the 7 diatonic chords.
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Each scale has 7 notes
Do re mi Fa So la ti
1 2 3 4 5 6 7
A chord is made up of every other note.
1 3 5
2 4 6
3 5 7
etc.
So Each Major scale creates a
set of 7 chords.
So you can play the scale in Chords.
The C scale creates these chords:
C Major
d minor
e minor
F Major
G Major
a minor
b minor (Flat 5)
In Project X Keith refers to these as
the 7 diatonic chords.
because the Major scale is also known
as the diatonic scale system.
In theory the chords are:
Major 1 or I
minor 2 or ii
minor 3 or iii
Major 4 or IV
Major 5 or V
minor 6 or vi
minor (Flat 5) 7 or vii
The way in which a chord progression presents itself will reveal which Key the chords are in.
