Chord Distribution Analysis

Chord SymbolCountFrequency
Am7615.0%
Cmaj7410.0%
D7410.0%
G7#537.5%
Em737.5%
F625.0%
F#0725.0%
C6/G25.0%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)4
G7#5 -> Cmaj7Resolution (Major)3
Cmaj7 -> G7#5Setup (Major Key)2
Bbm7 -> Eb7Setup (Major Key)2
D7 -> Gmaj7Resolution (Major)1
Dm7 -> G7#5Setup (Major Key)1
A7b9 -> Dm7Resolution (Minor)1
Dm7 -> G7Setup (Major Key)1

Harmonic Highlights

  • Features a sophisticated modulation to the bVI tonal center (Ab major) via a Bbm7 - Eb7 - Ab6 sequence, requiring a shift in harmonic focus mid-progression.
  • Utilizes a classic #iv diminished chord (F#o7) resolving to the I chord over its dominant pedal (C6/G), a staple of the New Orleans “gospel-blues” sound.
  • Incorporates secondary dominants (A7b9, D7) to create chromatic voice-leading and smooth transitions between the home key and the temporary Ab major environment.

Improvisation Focus Navigating tonal centers via guide-tones, specifically transitioning between C major and Ab major scales.

Difficulty Rating 3 (Intermediate). While the tempo is usually relaxed, the performer must fluidly handle a modulation to a distantly related key and manage chromatic passing chords.