Chord Distribution Analysis

Chord SymbolCountFrequency
Dm71113.8%
C71012.5%
Gm7810.0%
Am745.0%
Fmaj7/A33.8%
A733.8%
A7/G22.5%
D7/F#22.5%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)7
A7 -> Dm7Resolution (Minor)3
Gm7b5/Db -> C7Setup (Minor Key)2
C7 -> Fmaj7/AResolution (Major)2
Dm7 -> G7Setup (Major Key)2
E7 -> Amaj7/C#Resolution (Major)1
Am7 -> D7Setup (Major Key)1
D7 -> Gm7Resolution (Minor)1
Bm7 -> E7Setup (Major Key)1
E7 -> Am7Resolution (Minor)1
F7 -> Bbmaj7Resolution (Major)1
A7alt -> Dm7Resolution (Minor)1
Gm7/C -> C7Setup (Major Key)1

Harmonic Highlights

  • Employs a descending chromatic sequence of secondary dominants (A7/Gโ€“D7/F#โ€“G7/Fโ€“C7/Eโ€“F7/Eb) that creates sophisticated linear motion and cycle-of-fifths tension.
  • Utilizes frequent inversions (Fmaj7/A, Bb6/D, Gm7b5/Db) to facilitate a stepwise, melodic bass line, blurring the distinction between functional harmony and counterpoint.
  • Bridges the relative keys of F major and D minor through rapid ii-V-I progressions, requiring the soloist to pivot frequently between major and natural minor tonalities.
  • The Gm7b5/Db functions as a chromatic predominant chord, providing a dark, diminished-style tension that resolves strongly into the C7 turnaround.

Improvisation Focus Guide Tone Navigation to highlight the shifting 3rds and 7ths within the descending dominant cycle.

Difficulty Rating 4/5: The combination of a 3/4 waltz feel, rapid harmonic rhythm, and non-diatonic slash chords requires advanced melodic fluency and harmonic awareness.


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The Real Book - Volume I
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