Chord Distribution Analysis

Chord SymbolCountFrequency
C7720.0%
Fm514.3%
G7514.3%
C7/E38.6%
Ebm638.6%
Dbmaj738.6%
Fm725.7%
F625.7%

Key Patterns Detected

PatternFunctionFrequency
Fm -> C7/ESetup (Major Key)3
C7 -> FmResolution (Minor)3
C7 -> Fm7Resolution (Minor)2
Fm7 -> C7Setup (Major Key)2
Dm7b5 -> G7Setup (Minor Key)1
F7 -> Bbm7Resolution (Minor)1
Bbm7 -> Eb7Setup (Major Key)1

Harmonic Highlights

  • The progression features a sophisticated chromatic bass descent (F - E - Eb - Db), moving from the tonic through a secondary dominant (C7/E) and a minor plagal substitution (Ebm6) to reach the bVI (Dbmaj7).
  • Functional harmony is anchored by frequent ii-V-I cells in F minor, specifically utilizing G7 to C7 to reinforce the home key.
  • The sequence Dm7b5 to G7 acts as a “ii-V of V,” creating a double-dominant tension that heightens the resolution to the primary C7 altered dominant.
  • Structural modal shifts between F Aeolian and F Harmonic minor are essential for navigating the tension between the natural 6th in the melody and the leading tone in the harmony.

Improvisation Focus F Harmonic Minor for navigating the minor ii-V-I resolutions and the prominent C7(b9) dominant chords.

Difficulty Rating 3/5: The moderate waltz tempo is accessible, but the chromatic harmonic movement requires fluid voice-leading skills and a strong grasp of minor-key functional harmony.


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The Real Book - Volume I
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