Welcome to the first and most important lesson in Minor Blues 12-Bar Form & Harmony…
Like the Major Blues 12-Bar pattern, the Minor Blues 12-bar pattern consists of three distinct 4-bar phrases…
Phrase #1 (bars 1-4) establishes both the home key and minor-ness of the piece with the Cm(7) chord…
Phrase #2 (bars 5-9) creates harmonic tension with the Fm7 chord (iv7) that is released with a return back to the tonic Cm7 chord (i7)…
Phrase #3 (bars 9-12) creates harmonic tension with the Gm7 chord (v7) that is released with a return back to the tonic Cm7 chord (i7).
Listen to all three phrases combined into a 12-bar chorus…
The deep appreciation of this three-phase structure is absolutely essential to playing minor 12-bar blues in authentic style. Think of 12-bar blues form as a three-line poem and you are off to a great start!