Chord Distribution Analysis

Chord SymbolCountFrequency
Gm7719.4%
C7719.4%
Bb7411.1%
Am7411.1%
Fmaj725.6%
Ab0725.6%
D725.6%
F625.6%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)7
C7 -> Gm7Resolution (Minor)2
C7 -> Fmaj7Resolution (Major)2
Fmaj7 -> Bb7Setup (Major Key)2
Am7 -> D7Setup (Major Key)2
Bm7 -> E7Setup (Major Key)1
Am7b5 -> D7b9Setup (Minor Key)1
D7b9 -> Gm7Resolution (Minor)1
D7 -> Gm7Resolution (Minor)1

Harmonic Highlights

  • Employs frequent ii-V-I progressions in F Major, often preceded by a Bb7 (IV7) acting as a subdominant neighbor or “backdoor” dominant.
  • Features a chromatic descending turnaround (Am7 - Ab°7 - Gm7) that utilizes the diminished chord as a passing bridge to the supertonic.
  • The bridge shifts the tonal center to the mediant (A Major) via a Bm7 - E7 - A6 sequence, requiring a sudden shift in harmonic perspective.
  • Utilizes secondary dominants like D7b9 to create tension-rich resolutions back into the primary Gm7 - C7 cycles.

Improvisation Focus Navigating functional ii-V-I sequences and voice leading through chromatic passing tones.

Difficulty Rating 3/5. While the A sections are grounded in standard F major diatonicism, the bridge’s modulation to A major requires intermediate-level tonal awareness.


📚 Standard Available in:

The Real Book - Volume VI
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