Chord Distribution Analysis

Chord SymbolCountFrequency
Bb7821.6%
Fm7718.9%
Ebmaj7616.2%
Cm7616.2%
F7410.8%
Eb638.1%
Abmaj725.4%
Bb7#512.7%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)6
Bb7 -> Ebmaj7Resolution (Major)4
Cm7 -> F7Setup (Major Key)2
Bb7 -> Fm7Resolution (Minor)1
Fm7 -> Bb7#5Setup (Major Key)1
Bb7#5 -> Ebmaj7Resolution (Major)1

Harmonic Highlights

  • The progression centers on the I-VI-ii-V turnaround (Ebmaj7-Cm7-Fm7-Bb7), a foundational cycle that reinforces the Eb major tonic.
  • The inclusion of the secondary dominant V7/V (F7) instead of the diatonic ii (Fm7) introduces chromatic tension, pulling more aggressively toward the dominant Bb7.
  • A stable subdominant (Abmaj7) provides a brief harmonic plateau, momentarily suspending the cyclic motion of the tonic-dominant turnarounds.
  • Stepwise root movement and circle-of-fifths logic ensure smooth voice leading, typical of Vernon Dukeโ€™s sophisticated yet accessible compositional style.

Improvisation Focus Eb Major Bebop scale and guide-tone navigation of the I-VI-ii-V cycle.

Difficulty Rating 2/5 - The predictable diatonic structure and standard ii-V-I patterns make it an ideal vehicle for practicing foundational jazz vocabulary.


๐Ÿ“š Standard Available in:

The Real Book - Volume III
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