12-bar blues in A
A7I7A7I7A7I7A7I7D7IV7D7IV7A7I7A7I7E7V7D7IV7A7I7E7V7
The 12-bar blues form in A, a jam-session standard that puts A7, D7 and E7 to work in a real progression.
Why this progression matters
The same 12-bar form players use in E works in A, a common blues and rock key. Learning it in more than one key helps you join jams and follow chord changes by ear.
Practice note
Count four beats per bar and announce the bar number. Keep the turnaround on bars 9–12 clear.
Bottleneck change: A7 → D7
How to practice it
- 1Learn the three dominant-seventh shapes: A7, D7 and E7.
- 2Count four steady beats for each chord and speak the bar number out loud.
- 3Practice bars 9–12 (E7–D7–A7–E7) until the turnaround feels predictable.
- 4Use downstrums first; add a shuffle only when the form stays steady.
Where you'll hear it
- Blues jams in A
- Rock-and-roll turnarounds
- Call-and-response practice with another player
The chords you'll need
Drill the hard changes
Progressions break at their weakest transition. Drill adjacent pairs in isolation:
FAQ
How is the A blues different from the E blues?
The 12-bar layout is identical. Only the I, IV and V chords change: A7, D7 and E7.
Should I use a shuffle?
A shuffle is a good fit, but straight quarter-note strums make the form easier to learn first.
Keep learning
Pair this loop with a practice guide so the changes stick.