Chord Distribution Analysis

Chord SymbolCountFrequency
Cmaj7525.0%
Abmaj7315.0%
Fm715.0%
Bb715.0%
Bm715.0%
E715.0%
Bbm715.0%
Eb715.0%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)1
Bm7 -> E7Setup (Major Key)1
Bbm7 -> Eb7Setup (Major Key)1
Eb7 -> Abmaj7Resolution (Major)1
Am7 -> D7Setup (Major Key)1
Dm7 -> G7Setup (Major Key)1
G7 -> Cmaj7Resolution (Major)1

Harmonic Highlights

  • Employs a “backdoor” ii-V progression (Fm7-Bb7) in the third measure, substituting the traditional subdominant with a minor iv to bVII7 movement.
  • Features a chromatic descent of ii-V sequences (Bm7-E7 followed by Bbm7-Eb7) that shifts the tonal center rapidly toward Ab major.
  • Utilizes the “Tadd Dameron turnaround” in the final four bars (Cmaj7-Ebmaj7-Abmaj7-Dbmaj7), replacing the standard I-vi-ii-V with a series of non-diatonic major seventh chords.

Improvisation Focus Navigating rapid, non-diatonic ii-V chains and resolving chromatic target tones.

Difficulty Rating 4/5: The fast harmonic rhythm and constant modulation through unrelated key centers require advanced knowledge of voice leading and substitution.


📚 Standard Available in:

The Real Book - Volume I
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