Chord Distribution Analysis

Chord SymbolCountFrequency
Cmaj7511.1%
B7alt48.9%
Am748.9%
D736.7%
G736.7%
F#7b924.4%
F24.4%
Em724.4%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)2
Dm7 -> G7Setup (Major Key)2
Gm7 -> C7Setup (Major Key)2
C7 -> Fmaj7Resolution (Major)2
Fmaj7 -> Bb7Setup (Major Key)2
Em -> B7altSetup (Major Key)2
B7alt -> Emaj7Resolution (Major)2
F#m7b5 -> B7b9Setup (Minor Key)1
B7b9 -> EmResolution (Minor)1
E7#9 -> Am7Resolution (Minor)1
G7 -> Cmaj7Resolution (Major)1
Cmaj7 -> G7#5Setup (Major Key)1

Harmonic Highlights

  • Utilizes chromatic $II-V$ movements ($F#m7b5 - B7$) to target the mediant ($Em$), creating a sophisticated diversion from the $C$ major tonic.
  • Employs a “Backdoor” $bVII7$ ($Bb7$) resolution to $Cmaj7$, providing a characteristic subdominant minor flavor.
  • Features a significant modulation to $E$ major ($Emaj7$) via $F#m7b5 - B7b9$, shifting the tonal center a major third up from the home key.
  • Incorporates $II-V-I$ cycles in $F$ major ($Gm7 - C7 - Fmaj7$) to emphasize the subdominant region before returning to the tonic.

Improvisation Focus

Mastering the Altered and Lydian Dominant scales to navigate the frequent secondary dominants and non-diatonic extensions.

Difficulty Rating

4/5: The frequent modulations and secondary $II-V$ patterns require a strong grasp of non-diatonic resolutions and rapid shifts in tonal centers.


📚 Standard Available in:

The Real Book - Volume I
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