Chord Distribution Analysis

Chord SymbolCountFrequency
Ab61629.6%
Eb7713.0%
Ab611.1%
Bbm747.4%
F747.4%
Fm723.7%
Cm723.7%
Ab7/C23.7%

Key Patterns Detected

PatternFunctionFrequency
Bbm7 -> Eb7Setup (Major Key)4
Cm7 -> F7Setup (Major Key)2
Bbm7/Eb -> Eb7Setup (Major Key)2

Harmonic Highlights

  • Utilizes a robust I-vi-ii-V cycle in Ab Major, employing Fm7 and Bbm7 as functional pre-dominant anchors for the primary theme.
  • Integrates a #IV diminished passing chord (D°7) following the subdominant (Db), providing a chromatic ascent back to the tonic Ab6.
  • The bridge sequences secondary dominants (III7–VI7–II7–V7) via the circle of fifths, requiring navigation through C7, F7, and Bb7 before resolving to the primary key.

Improvisation Focus Ab Major Blues scale for thematic riffing, transitioning to chord-tone arpeggiation to navigate the bridge’s rapid dominant cycle.

Difficulty Rating 3/5: The A sections are harmonically stable, but the bridge requires fluid navigation of secondary dominants at typical high-velocity swing tempos.


📚 Standard Available in:

The Real Book - Volume I
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