Chord Distribution Analysis

Chord SymbolCountFrequency
Bb7716.7%
F7511.9%
Ebmaj749.5%
Cm749.5%
Gm737.1%
C737.1%
Fm737.1%
Bb7sus24.8%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)4
Bb7 -> Ebmaj7Resolution (Major)3
Gm7 -> C7Setup (Major Key)3
Bbm7 -> Eb7Setup (Major Key)2
Eb7 -> Abmaj7Resolution (Major)2
C7 -> Fm7Resolution (Minor)2
Fm7 -> Bb7Setup (Major Key)2
Abm7 -> Db7Setup (Major Key)1
D7b13 -> Gm7Resolution (Minor)1

Harmonic Highlights

  • Employs a standard I-vi-II7-V7 progression in the A section, substituting the diatonic iim7 for a brighter secondary dominant II7 (F7).
  • Features a bridge that tonicizes the subdominant (Abmaj7) via a ii-V (Bbm7-Eb7) sequence, a classic Great American Songbook modulation.
  • Utilizes a “backdoor” ii-V (Abm7-Db7) to transition from the subdominant area back to the tonic or iii chord (Gm7).
  • Incorporates a cycle of fourths (Gm7-C7-Fm7-Bb7) to create strong directional pull toward the final resolution in Eb major.

Improvisation Focus Guide-tone mapping to navigate the transitions between secondary dominants (II7 and VI7) and the parent Eb major scale.

Difficulty Rating 2/5: The harmonic rhythm is steady and the modulations are highly functional, making it an excellent entry point for learning to play over secondary dominants.


πŸ“š Standard Available in:

The Real Book - Volume V
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