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```									The Blues Progression

Below is a basic introduction to the Blues Progression

The 12-Bar Blues Progression

The 12-Bar Blues Progression  is just what it says it is -- a chord progression made up of 12
bars or measures.  (A chord progression being simply a group of chords that are repeated in a
set order.)

The 12-Bar Blues Progression has a specific, mathematical formula which allows it to be
applied universally to any key, provided you know the root (which is another word for the note

The chart below shows the 12-Bar Blues Progression in the Key of C.  It is in the Key of C
because we begin on the C7 chord.

The 12-Bar Blues Progression in C

I            I            I            I

C7         C7         C7          C7

IV          IV           I            I

F7          F7          C7         C7

V            IV           I            I

G7          F7          C7          C7

The Roman Numerals represent the mathematical formula for the 12-Bar Blues Progression .
Each Roman Numeral corresponds to a Chord -- the numbers all being relative to the root.

For example, in the key of C:

I    II    III    IV    V    VI    VII
C    D    E    F    G     A     B

You may notice that the only chords used in the Blues Progression are I, IV, and V.  These
chords all happen to be 7th chords, and thus we add a 7 to every chord of the Blues
Progression as seen above in the C Blues Progression.

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The Blues Progression

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To move the Blues Progression to various keys, one simply applies the pattern, only beggining
with a new root.

For example, to find the Blues Progression in the key of G the Roman Numeral I would be G,
and the rest would be assigned numerically from there.....

I    II    III    IV    V    VI    VII
G    A    B    C    D    E    F#

Thus, the 12 Bar Blues Progression in the key of G would look like this:

12 Bar Blues Progression in G

I            I            I            I

G7        G7          G7          G7

IV          IV            I            I

C7         C7           G7         G7

V            IV            I            I

D7          C7          G7          G7

..Back to Music Theory 101

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