Chord Distribution Analysis

Chord SymbolCountFrequency
Gm7516.1%
C7516.1%
D739.7%
Am739.7%
Fmaj726.5%
Abm726.5%
Db726.5%
Gbmaj726.5%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)5
D7 -> Gm7Resolution (Minor)3
Abm7 -> Db7Setup (Major Key)2
Db7 -> Gbmaj7Resolution (Major)2
Am7 -> D7Setup (Major Key)2
Em7 -> A7Setup (Major Key)1
A7 -> Dmaj7Resolution (Major)1
C7 -> Fmaj7Resolution (Major)1
Fmaj7 -> Bb7Setup (Major Key)1

Harmonic Highlights

  • The bridge features a “Giant Steps” precursor, cycling through three key centers (Bb, Gb, and D) related by descending major thirds.
  • Abrupt modulations are achieved via ii-V-I cells, specifically Abm7–Db7 to Gbmaj7 and Em7–A7 to Dmaj7, before returning to F major.
  • The A section employs a standard I–VI–ii–V turnaround and diatonic movement, contrasting sharply with the bridge’s chromatic complexity.

Improvisation Focus Navigating rapid tonal shifts by targeting 3rds and 7ths during the major-third modulations in the bridge.

Difficulty Rating 4/5: While the A sections are standard, the bridge requires advanced proficiency to fluidly navigate three unrelated keys at a fast tempo.


📚 Standard Available in:

The Real Book - Volume I
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