Chord Distribution Analysis

Chord SymbolCountFrequency
Bb7513.9%
Abmaj7411.1%
Eb638.3%
Eb738.3%
Ebmaj738.3%
C738.3%
Fm738.3%
Bbm725.6%

Key Patterns Detected

PatternFunctionFrequency
Eb7 -> Abmaj7Resolution (Major)3
Bbm7 -> Eb7Setup (Major Key)2
Abmaj7 -> Db7Setup (Major Key)2
Fm7 -> Bb7Setup (Major Key)2
Gm7 -> C7b9Setup (Major Key)1
C7b9 -> Fm7Resolution (Minor)1
Bb7 -> Ebmaj7Resolution (Major)1
C7 -> Fm7Resolution (Minor)1

Harmonic Highlights

  • Utilizes a secondary ii-V progression (Bbm7 - Eb7) to tonicize the IV chord (Abmaj7), establishing a clear subdominant departure.
  • Employs the backdoor dominant resolution (Db7 to Ebmaj7), a classic jazz device where the bVII7 substitute replaces the V7 for a softer cadence.
  • Features a standard iii-VI-ii-V turnaround (Gm7 - C7b9 - Fm7 - Bb7) using a dominant chord with a b9 tension to create harmonic pull toward the ii chord.
  • Incorporates chromatic ascending motion via the A°7 (#IV°) passing chord to bridge the IVmaj7 and the tonic, providing smooth voice leading.

Improvisation Focus Guide-tone targeting (3rds and 7ths) to navigate the frequent ii-V-I cell transitions.

Difficulty Rating 2/5: The changes follow predictable Great American Songbook conventions with a moderate harmonic rhythm, making it accessible for intermediate players.


📚 Standard Available in:

The Real Book - Volume III
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