Chord Distribution Analysis

Chord SymbolCountFrequency
G7612.8%
Cm7510.6%
F7510.6%
Bbmaj736.4%
Cm7/F24.3%
Dm724.3%
Fm724.3%
Bb724.3%

Key Patterns Detected

PatternFunctionFrequency
G7 -> Cm7Resolution (Minor)5
Cm7 -> F7Setup (Major Key)5
Dm7 -> G7Setup (Major Key)2
Fm7 -> Bb7Setup (Major Key)2
Cm7/F -> F7#9#11Setup (Major Key)1
F7#5#9 -> Bbmaj7Resolution (Major)1
Fm7b5 -> Bb7#9Setup (Minor Key)1
Bb7#9 -> Ebmaj7Resolution (Major)1
Abm7b5 -> Db7#9Setup (Minor Key)1
Db7#9 -> Gbmaj7Resolution (Major)1
F7#9 -> Bbmaj7Resolution (Major)1

Harmonic Highlights

  • The intro utilizes a chromatic descent of altered dominants ($D7^{#9#11}$, $Db7^{#9#11}$, $C7^{#9#11}$) over an F pedal, creating signature Hard Bop tension before resolving to the head.
  • The A sections function as a Bb “Rhythm Changes” variant, cycling through rapid $I-VI-ii-V$ turnarounds ($Bbmaj7-G7-Cm7-F7$) at a brisk tempo.
  • Bridge transitions utilize $ii-V$ cells ($Fm7-Bb7$) to modulate briefly to the IV ($Eb6$), maintaining forward momentum through functional harmonic movement.

Improvisation Focus Bb Major Bebop scale and the “Altered” scale over the $V7$ chords to effectively navigate the dissonant extensions and rapid turnarounds.

Difficulty Rating 4/5: The fast Hard Bop tempo combined with dense harmonic shifts and chromatic altered dominants demands significant technical proficiency and harmonic awareness.


📚 Standard Available in:

The Real Book - Volume III
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