Blues
Chord Progressions:
The Blues
is the accepted roots of Jazz and the heart of Rock.
It is a musical form that is based almost
entirely on three chord theory.
Although
the blues formula has survived to become the structure of Pop, the most common
blues pattern is known as Twelve Bar Blues.
The name
is from the fact that it takes a number of "bars" to complete each cycle of
the chord progressions.
A
"bar" is equal to a "measure" in music theory or a count of
1-2-3-4 in common time.
There are
many variations on the theme and many ways of arranging the three chords.
Sometimes
the chords are major, sometimes sevenths, sometime there are only eight
bars.
Rhythms,
vocal and lead guitar solos give the blues is character just as much as
its chord progressions.
Below are
four typical blues chord progressions in the key of E.
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