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Roman Numeral System for Chord Progressions Explained
Here I've created a basic C scale and a delta chord of a pitch note of a scale. There's
seven notes here - C, D, E, F, G, A, B. The first chord is called C. The second chord
with a small roman numeral is D minor. The third chord E minor, F is the fourth chord,
G is the five chord. A minor is the sixth chord. B diminished is actually the seventh
chord. We will make into what it makes diminished chord then why it's diminished later on.
So this is a scale with chords built on top. We called this triads. Triads because there's
three notes and we will also get into how to build chords but you can see there quite
a pattern is quite obvious here just top on each other three notes.
So if we were to take the 1, 6, 4, 5 we will come out with something like this. The one
chord being C. The six chord being the A minor. The four chord being F and the G chord being
the five chord. This is a 1, 6, 4, 5 pattern so a typical turn around pattern is one measure
each and a repeat over and over. I suggest that you tried playing this on your guitar
as you can sense what it sounds like and then see if what you can do it in other keys as
well.
If this were in the key of G, you just start on the G chord and count up -- G, A, B, C
would be the four chord, D would be the five chord. D, E minor would be the six chord so
that would be G one chord, six E minor, four chord would be G, A, B, C A and the five chord
would be D.
That's it for now.