Chord Distribution Analysis

Chord SymbolCountFrequency
Am7614.0%
D7614.0%
Gmaj7511.6%
F749.3%
Em737.0%
G#0724.7%
Dm724.7%
G724.7%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)4
Dm7 -> G7Setup (Major Key)2
G7 -> Cmaj7Resolution (Major)2
Cmaj7 -> F7Setup (Major Key)2
Bm7b5 -> E7b9Setup (Minor Key)2
E7b9 -> Am7Resolution (Minor)2
Cm7 -> F7Setup (Major Key)2
Bm7 -> E7Setup (Major Key)1
E7 -> Am7Resolution (Minor)1
D7 -> Gmaj7Resolution (Major)1

Harmonic Highlights:

  • The progression utilizes a #I°7 passing chord (G#dim7) to create chromatic bass movement between the Imaj7 and iim7 chords.
  • Secondary dominants and their related iim7s (Dm7-G7) are used to tonicize the IV chord (Cmaj7), a staple of the AABA song form.
  • The inclusion of Bm7b5 to E7b9 creates a minor ii-V-i pull toward the Am7 (the ii chord), adding sophisticated tension.
  • Tritone substitutions or chromatic approach chords (Eb7 to D7) provide smooth voice leading back to the dominant.
  1. Improvisation Focus: G Major Bebop Scale.

  2. Difficulty Rating: 2/5: The harmonic structure follows predictable diatonic patterns and common jazz turnarounds, making it approachable for intermediate players.