Quick four · Quick change · C major · I7–IV7–I7–IV7–I7–V7–IV7–I7–V7
Quick-change Blues is a chord pattern you can play in any key. The degrees are I7–IV7–I7–IV7–I7–V7–IV7–I7–V7.
A twelve-bar variant that visits IV7 early, in the second bar. A less plain opening, and the more commonly played form.
Patterns are common chord moves. They are not the chart of a recorded hit.
Patterns are named by theory. Play them in any key that fits your voice.
Each song page has a chord chart, fingerings, and the same song in every key.
I7 – IV7 – I7 – IV7 – I7 – V7 – IV7 – I7 – V7
C7 · F7 · C7 · F7 · C7 · G7 · F7 · C7 · G7
| 1 | C7 | F7 | C7 | · |
|---|---|---|---|---|
| 2 | F7 | · | C7 | · |
| 3 | G7 | F7 | C7 | G7 |
The chord moves once in the second bar, so instead of holding one note through the first four bars, bend the line once to match that move. Sing the other ten bars as in the basic twelve-bar.
| Keys | Chord chart |
|---|---|
| C major · Written in this key | C7 · F7 · C7 · F7 · C7 · G7 · F7 · C7 · G7 |
| Db major | Db7 · Gb7 · Db7 · Gb7 · Db7 · Ab7 · Gb7 · Db7 · Ab7 |
| D major | D7 · G7 · D7 · G7 · D7 · A7 · G7 · D7 · A7 |
| Eb major | Eb7 · Ab7 · Eb7 · Ab7 · Eb7 · Bb7 · Ab7 · Eb7 · Bb7 |
| E major | E7 · A7 · E7 · A7 · E7 · B7 · A7 · E7 · B7 |
| F major | F7 · Bb7 · F7 · Bb7 · F7 · C7 · Bb7 · F7 · C7 |
| F# major | F#7 · B7 · F#7 · B7 · F#7 · C#7 · B7 · F#7 · C#7 |
| G major | G7 · C7 · G7 · C7 · G7 · D7 · C7 · G7 · D7 |
| Ab major | Ab7 · Db7 · Ab7 · Db7 · Ab7 · Eb7 · Db7 · Ab7 · Eb7 |
| A major | A7 · D7 · A7 · D7 · A7 · E7 · D7 · A7 · E7 |
| Bb major | Bb7 · Eb7 · Bb7 · Eb7 · Bb7 · F7 · Eb7 · Bb7 · F7 |
| B major | B7 · E7 · B7 · E7 · B7 · F#7 · E7 · B7 · F#7 |
These songs use this pattern. This is not their chord chart: real recordings differ in key, rhythm and the chords they add.
No Songbook entry uses this pattern as a run of chords.