Chord Distribution Analysis

Chord SymbolCountFrequency
Fmaj71441.2%
Gm7823.5%
Ab0725.9%
D725.9%
Bbm725.9%
Eb725.9%
C725.9%
F625.9%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> D7Setup (Major Key)2
D7 -> Gm7Resolution (Minor)2
Bbm7 -> Eb7Setup (Major Key)2
Gm7 -> C7Setup (Major Key)2
C7 -> Fmaj7Resolution (Major)1

Harmonic Highlights

  • The Ab°7 serves as a #II diminished passing chord (or rootless G7b9), creating a chromatic bridge between the Fmaj7 tonic and the Gm7 supertonic.
  • A VI7 (D7) secondary dominant tonicizes the Gm7, introducing a momentary V-i pull that strengthens the move to the subdominant area.
  • The Bbm7 to Eb7 sequence functions as a “backdoor” ii-V progression (ivm7–bVII7), providing a poignant, melancholy shift before resolving back to Fmaj7.
  • Standard ii-V-I turnarounds (Gm7-C7-Fmaj7) define the structural cadences, anchoring the song’s primary tonality in F Major.

Improvisation Focus The F Major Bebop scale, with specific focus on voice-leading the b6 (Db) and b7 (Eb) during the backdoor Bbm7–Eb7 resolution.

Difficulty Rating 2/5; the harmonic rhythm is slow and the melody is diatonic, making the few chromatic substitutions easy to navigate for intermediate players.


📚 Standard Available in:

The Real Book - Volume IV
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