Chord Progression
I7 – IV7 – V7 – IV7
The most raw and soulful harmonic motion in American music — three dominant seventh chords moving through the primary blues pattern.
Chords in C major / C minor
C7 – F7 – G7 – F7
I7 – IV7 – V7 – IV7
Idominant7+0 stIVdominant7+5 stVdominant7+7 stIVdominant7+5 stThe most raw and soulful harmonic motion in American music — three dominant seventh chords moving through the primary blues pattern.
In the blues, all three primary chords (I, IV, and V) are dominant sevenths — unlike classical or pop harmony where only V is dominant. This creates a unique harmonic world where there is no "home" chord that feels fully resolved — everything has the slight tension of a dominant seventh. The I7, IV7, and V7 create a three-chord story: the I7 is home (but tense), the IV7 moves away, and the V7 creates the strongest push back to I7. The 12-bar form traditionally goes: I7 (4 bars) – IV7 (2 bars) – I7 (2 bars) – V7–IV7–I7 (2 bars). The blues scale and minor pentatonic fit perfectly over all three chords. In C major: C7 – F7 – G7 – F7.
The 12-bar blues (I7–IV7–V7) is the backbone of blues, rock, and jazz. All three chords are dominant sevenths, so the whole progression exists in a state of tension. That perpetual unresolved feeling IS the blues — raw, honest, and immediate.
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