Chord Distribution Analysis

Chord SymbolCountFrequency
F61326.5%
Gm7816.3%
C7b5/Gb612.2%
Bbmaj7510.2%
Eb948.2%
F724.1%
C724.1%
Em712.0%

Key Patterns Detected

PatternFunctionFrequency
F7 -> Bbmaj7Resolution (Major)2
Gm7 -> C7Setup (Major Key)2
Em7 -> A7Setup (Major Key)1
Am7 -> D7Setup (Major Key)1
Dm7 -> G7Setup (Major Key)1
Gm7 -> C7b9Setup (Major Key)1

Harmonic Highlights

  • The opening uses C7b5/Gb (a tritone substitute for the V7) as a chromatic neighbor chord to create tension against the F6 tonic.
  • The progression moves from F7 to Bbmaj7 followed by Eb9, utilizing a “backdoor” bVII9 resolution to return to the diatonic Gm7 or F6.
  • The sequence of secondary ii-V progressions (Em7–A7 to Am7–D7) creates a cycle-of-fourths movement that briefly tonicizes the relative minor and supertonic areas.

Improvisation Focus F Major Bebop Scale

Difficulty Rating 3/5. While the AABA form is standard, the performer must navigate chromatic tritone substitutions and rapid secondary dominant cycles during the bridge.


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The Real Book - Volume III
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