Chord Distribution Analysis

Chord SymbolCountFrequency
Fmaj7722.6%
C739.7%
Eb726.5%
Db726.5%
Am726.5%
Ab0726.5%
Cm726.5%
F726.5%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)2
Dm7 -> G7Setup (Major Key)2
Gm7 -> C7Setup (Major Key)2
C7 -> Fmaj7Resolution (Major)2
F7 -> Cm7Resolution (Minor)1
F7 -> Bbmaj7Resolution (Major)1
Bbmaj7 -> F7#5Setup (Major Key)1
F7#5 -> Bbmaj7Resolution (Major)1
G7 -> Dm7Resolution (Minor)1
Fmaj7 -> C7Setup (Major Key)1

Harmonic Highlights

  • Modal interchange via “backdoor” dominant chords (Eb7 and Db7) creates chromatic color against the Fmaj7 tonic, borrowing from the parallel minor key.
  • The sequence Am7 – Ab°7 – Gm7 – C7 employs a chromatic passing diminished chord to facilitate smooth voice leading from the iii to the ii-V.
  • The bridge shifts to the subdominant (Bbmaj7) and utilizes secondary dominants (Dm7-G7) to tonicize the relative minor’s V chord before returning to the home key.

Improvisation Focus Lydian Dominant scale (4th mode of Melodic Minor) to navigate the non-resolving Eb7 and Db7 chords.

Difficulty Rating 3/5. While usually performed as a ballad, the frequent use of non-diatonic dominant substitutions requires a solid understanding of modal interchange and chromatic voice leading.


📚 Standard Available in:

The Real Book - Volume IV
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