Chord Distribution Analysis

Chord SymbolCountFrequency
Cmaj7517.2%
Dm7517.2%
G7517.2%
Ebm726.9%
Ab726.9%
Fmaj726.9%
F7#1113.4%
Em713.4%

Key Patterns Detected

PatternFunctionFrequency
Dm7 -> G7Setup (Major Key)3
Cmaj7 -> F7#11Setup (Major Key)1
Em7 -> A7Setup (Major Key)1
A7 -> Dm7Resolution (Minor)1
G7 -> Dm7Resolution (Minor)1
Gm7 -> C7Setup (Major Key)1
C7 -> Fmaj7Resolution (Major)1
Fm7 -> Bb7Setup (Major Key)1
Bb7 -> Ebmaj7Resolution (Major)1

Harmonic Highlights

  • The use of F7#11 (IV7) serves as a Lydian Dominant color chord, providing a bright, non-resolving subdominant departure from the tonic Cmaj7.
  • The progression utilizes a III-VI-II-V turnaround (Em7-A7-Dm7-G7) to create strong functional momentum back to the key center.
  • Chromatic side-slipping occurs through the parallel movement of ii-V cells (Dm7-G7 to Ebm7-Ab7), creating brief, non-diatonic tension.
  • The harmony relies on a cyclical structure typical of Bossa Nova, alternating between static tonic prolongation and rapid circle-of-fifths movement.

Improvisation Focus Navigating the chromatic ii-V shifts by connecting chord tones through half-step voice leading.

Difficulty Rating 3/5; while the foundation is diatonic C major, the rapid side-slipping modulations and fast samba tempo require significant harmonic agility.


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The Real Book - Volume III
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