Blues

Quick Change Blues (I7–IV7–I7–I7–IV7–IV7–I7–I7–V7–IV7–I7–V7) Chord Progression

12-bar blues variation. Moves to IV in the second bar.

  • 12-bar
  • quick-change
  • classic

Roman numerals

  1. I7
  2. IV7
  3. I7
  4. I7
  5. IV7
  6. IV7
  7. I7
  8. I7
  9. V7
  10. IV7
  11. I7
  12. V7

Roman numerals give each chord’s position relative to the key’s tonic, so the progression sounds the same in any key.

Chords by key

Key of C

C7 – F7 – C7 – C7 – F7 – F7 – C7 – C7 – G7 – F7 – C7 – G7

Key of G

G7 – C7 – G7 – G7 – C7 – C7 – G7 – G7 – D7 – C7 – G7 – D7

Key of D

D7 – G7 – D7 – D7 – G7 – G7 – D7 – D7 – A7 – G7 – D7 – A7

All Blues chord progressions