Chord Distribution Analysis

Chord SymbolCountFrequency
Gm7817.8%
D7b9511.1%
C736.7%
Am736.7%
Amb636.7%
Fmaj724.4%
Ab0724.4%
Cm724.4%

Key Patterns Detected

PatternFunctionFrequency
D7b9 -> Gm7Resolution (Minor)5
Gm7 -> C7Setup (Major Key)3
Gm7 -> D7b9Setup (Major Key)3
Cm7 -> F7Setup (Major Key)2
F7 -> Bbmaj7Resolution (Major)2
Bbmaj7 -> Eb7Setup (Major Key)2
Am7 -> D7b9Setup (Major Key)2
Gm7 -> C7b9Setup (Major Key)2
Am6 -> D7Setup (Major Key)1
Dm7 -> G7Setup (Major Key)1
C7 -> Fmaj7Resolution (Major)1

Harmonic Highlights

  • Utilization of the #I°7 (Ab°7) passing diminished chord to create a chromatic bridge between the tonic Fmaj7 and the ii-V (Gm7-C7) progression.
  • Incorporation of a “backdoor” resolution using the bVII7 (Eb7) after the IV (Bbmaj7), providing a sophisticated subdominant minor flavor.
  • The bridge employs a distinctive “line clichĂ©” over the iii chord (Am), featuring internal voice movement (Am to Amb6 to Am6) that shifts the melodic focus.
  • Extensive use of secondary ii-V chains (Cm7–F7 leading to IV; Am7–D7b9 leading to ii) to create forward momentum within a standard AABA form.

Improvisation Focus Voice leading through the 3rds and 7ths of the secondary ii-V progressions.

Difficulty Rating 3/5: While the F major home key is stable, the frequent secondary dominants and bridge chromaticism require intermediate-level harmonic navigation.