Progression guide
12-Bar Blues Chord Progression
Learn the standard 12-bar blues form, hear all twelve bars in C, and move the same I7–IV7–V7 structure into six keys.
The short answer
I7–IV7–V7 over 12 bars in C blues
Four bars establish I7, two bars move to IV7, and the final four bars create a turnaround through V7, IV7, and I7. Repetition makes the form easy to follow while the last V7 invites another chorus.
01
Hear the complete progression
Play the whole pattern, then press individual chords to learn its shape.
C7 – C7 – C7 – C7 – F7 – F7 – C7 – C7 – G7 – F7 – C7 – G7
I7–IV7–V7 over 12 bars in C blues. Each chord lasts the same amount of time.
Sound loads when you first play.
02
How the chords work
The form balances predictability with tension. Dominant sevenths add blues color to all three primary chords, even though not every note belongs to one ordinary major scale.
- Bars 1–4 establish I7 and the tonal center.
- Bars 5–6 move to IV7 before bars 7–8 return to I7.
- Bar 9 reaches V7, the strongest point of tension.
- Bars 10–12 return through IV7 and I7, with V7 as an optional turnaround.
03
The same progression in six keys
The Roman numerals stay fixed while every chord moves with the tonic.
| Tonic | Chords |
|---|---|
| C | C7C7C7C7F7F7C7C7G7F7C7G7 |
| G | G7G7G7G7C7C7G7G7D7C7G7D7 |
| A | A7A7A7A7D7D7A7A7E7D7A7E7 |
| E | E7E7E7E7A7A7E7E7B7A7E7B7 |
| F | F7F7F7F7B♭7B♭7F7F7C7B♭7F7C7 |
| B♭ | B♭7B♭7B♭7B♭7E♭7E♭7B♭7B♭7F7E♭7B♭7F7 |
Useful variations
- Use IV7 in bar 2 for a quick-change blues.
- Finish the last bar on I7 when you want the piece to stop instead of loop.
- Change the rhythm before changing the harmony; the form supports many grooves.
Practice plan
- Count the bars aloud until you can feel where IV7 and V7 arrive.
- Play roots only, then add full seventh chords on a second pass.
- Practice the turnaround separately: V7–IV7–I7–V7.