Chord Distribution Analysis

Chord SymbolCountFrequency
C7642.9%
F7214.3%
Fm717.1%
Cm717.1%
Dbm717.1%
Bm717.1%
Am717.1%
G717.1%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> C7Setup (Major Key)1

Harmonic Highlights

  • Utilizes a modified 12-bar blues template, substituting the traditional V-IV-I turnaround with a specific sequence of minor 7th chords.
  • The inclusion of Fm7 in bar 6 introduces a subdominant minor (iv) coloration, adding a sophisticated bebop flavor to the blues structure.
  • The sequence Cm7-Dbm7-Bm7-Am7 employs a mixture of chromatic side-slipping and descending whole-step motion, creating a non-functional linear bridge back to the tonic.
  • Dominant 7th chords (C7, F7) act as stable blues pillars, providing a harmonic “home base” against the shifting minor chord cells.

Improvisation Focus C Blues scale integrated with half-step voice leading to navigate the chromatic minor 7th sequence.

Difficulty Rating 2/5. While the 12-bar form is accessible, the unconventional descending minor turnaround requires specific linear strategies beyond basic pentatonics.


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The Real Book - Volume II
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