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Barre None Pro

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Progression

The 12-bar blues (quick change) in A major

12-bar blues (quick change) in A major plays A7, D7 and E7 — I, IV and V — across 12 chords. The same twelve-bar blues form, ending back on the I chord for the last two bars instead of turning around on V — common when a band is vamping into a repeat.

The chords, in order

Bar 1A7I
Bar 2D7IV
Bar 3A7I
Bar 4A7I
Bar 5D7IV
Bar 6D7IV
Bar 7A7I
Bar 8A7I
Bar 9E7V
Bar 10D7IV
Bar 11A7I
Bar 12A7I

The shapes

IA7A dominant seventh, open position, capo 0x02020IVD7D dominant seventh, open position, capo 0xx0212VE7E dominant seventh, open position, capo 0020100

The same progression in a nearby key

Open 12-bar blues (quick change) in A major in the explorer →All seven chords in A major →