Chord Distribution Analysis

Chord SymbolCountFrequency
Fm6637.5%
Gm7b5212.5%
C7b9212.5%
Bbm7212.5%
Cm7b516.2%
F7b916.2%
Abm716.2%
Db716.2%

Key Patterns Detected

PatternFunctionFrequency
Gm7b5 -> C7b9Setup (Minor Key)2
C7b9 -> Fm6Resolution (Minor)2
Cm7b5 -> F7b9Setup (Minor Key)1
F7b9 -> Bbm7Resolution (Minor)1
Abm7 -> Db7Setup (Major Key)1

Harmonic Highlights

  • Utilizes a classic 12-bar minor blues structure in F minor, characterized by the recurring tonic Fm6.
  • Features a secondary ii-V (Cm7b5–F7b9) in bar 4 to provide a strong functional pull toward the subdominant Bbm7.
  • Employs a chromatic “side-slip” or substitution in bars 9-10 (Abm7–Db7) that resolves downward to the primary ii-V (Gm7b5–C7b9).
  • Relies on the minor 6th chord (Fm6) rather than a minor 7th, emphasizing the Dorian or Melodic Minor color.

Improvisation Focus F Melodic Minor scale, as it accounts for the natural 6th in the tonic chord and the altered extensions of the dominant chords.

Difficulty Rating 2/5 β€” The form is a standard minor blues, though the chromatic movement in the turnaround requires basic knowledge of side-stepping.


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The Real Book - Volume II
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