Chord Distribution Analysis

Chord SymbolCountFrequency
Fm6416.7%
Cmaj7416.7%
Dm7b5312.5%
Gm7b528.3%
C7b928.3%
G7#528.3%
Bbmaj728.3%
Ab728.3%

Key Patterns Detected

PatternFunctionFrequency
Gm7b5 -> C7b9Setup (Minor Key)2
C7b9 -> Fm6Resolution (Minor)2
Dm7b5 -> G7#5Setup (Minor Key)2
G7#5 -> Cmaj7Resolution (Major)2
Cm7 -> F7Setup (Major Key)1
F7 -> Bbmaj7Resolution (Major)1
Dm7b5 -> G7Setup (Minor Key)1

Harmonic Highlights

  • The A section utilizes a minor ii-V-i sequence (Gm7b5-C7b9-Fm6) within an F major key center, exemplifying sophisticated modal interchange.
  • The bridge modulates to the dominant (C major) before a secondary ii-V-I sequence (Cm7-F7-Bbmaj7) targets the subdominant key.
  • The Ab7 chord functions as a bIII7 dominant, providing a chromatic bridge between the Bb major tonic and the recurring ii-V turnaround.
  • Porter creates harmonic tension by delaying the definitive F major resolution until the final bars of the 32-measure form.

Improvisation Focus Navigating minor ii-V-i progressions using the C Altered and F Melodic Minor scales.

Difficulty Rating 3/5. The tune demands agility in switching between parallel major and minor modes and managing rapid modulations through the bridge.


๐Ÿ“š Standard Available in:

The Real Book - Volume V
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