12-Bar Blues Chord Progression
The 12‑bar blues is less about fancy harmony and more about a reliable roadmap. In C, the basic form sits on C7 for four bars, moves to F7 for two, returns to C7 for two, then hits the V–IV–I area (G7–F7–C7) with a turnaround back to G7. Those dominant 7ths are crucial: they add bite and keep the chords “leaning forward,” even when you’re technically on the home chord. Great blues melodies and solos work because the harmony changes slowly, letting you shape phrases, call‑and‑response, and rhythmic ideas. Countless classics—from early Chicago blues to rock ’n’ roll—are built on this skeleton. Once it’s comfortable, try the quick change (F7 in bar 2) or a jazzier turnaround, but keep the form audible.
- Key
- C major
- Tempo
- 90 BPM
- Groove
- swing
Play it on guitar
Start slow, keep your right hand steady, and aim for clean changes on the downbeats. Once it’s comfortable, add a groove and increase tempo.
Capo suggestion: try capo 0 and play in C shapes for open chords.
Chords: C7 – C7 – C7 – C7 – F7 – F7 – C7 – C7 – G7 – F7 – C7 – G7
Roman numerals & theory
Roman numerals describe the chord’s function relative to the key. This helps you transpose the “shape” to any key without memorizing new chord names.
In C major: I7–I7–I7–I7–IV7–IV7–I7–I7–V7–IV7–I7–V7
Variations (keep the progression, change the feel)
- • Add 7ths for color (try maj7 on I, m7 on vi, and V7 before resolving).
- • Use a sus4 resolve on the V chord (e.g. Gsus4 → G) to create tension and release.
- • Change the rhythm instead of the chords: try anticipations (hit the next chord on the “and” of 4).
- • Arpeggiate the top notes to create a hook while the harmony stays the same.
- • Borrow a darker chord for contrast (in a major key, try iv for one bar before returning).
Related
FAQ
Select a chord below to start building your progression