Chord Distribution Analysis

Chord SymbolCountFrequency
Gm7928.1%
C7928.1%
Fmaj739.4%
Ab0726.2%
Dm726.2%
G726.2%
F626.2%
F#0713.1%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)8
C7 -> Gm7Resolution (Minor)6
C7 -> Fmaj7Resolution (Major)2
Dm7 -> G7Setup (Major Key)2
A7 -> Dm7Resolution (Minor)1
G7 -> Dm7Resolution (Minor)1

Harmonic Highlights:

  • The $Ab^{\circ 7}$ acts as a chromatic passing chord ($bIII^{\circ 7}$) providing smooth voice-leading between the $Imaj7$ and $ii7$.
  • Extended $ii-V$ sequences ($Gm7-C7$) dominate the A sections, creating a cyclical harmonic rhythm typical of early swing era standards.
  • The bridge utilizes a $V/vi$ to $vi$ move ($A7$ to $Dm7$) followed by a $V/V$ to $V$ ($G7$ to $C7$), shifting the tonal center briefly toward the relative minor.
  • The $F#^{\circ 7}$ functions as a secondary leading-tone chord ($\sharp I^{\circ 7}$), intensifying the resolution to the $ii$ chord.
  1. Improvisation Focus: F Major Bebop scale integrated with diminished arpeggio substitutions over chromatic passing chords.

  2. Difficulty Rating: 2/5: The harmonic structure relies on standard diatonic functions and predictable secondary dominants, making it highly accessible for developing soloists.


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The Real Book - Volume I
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