Chord Distribution Analysis

Chord SymbolCountFrequency
D7821.1%
Gm7821.1%
C737.9%
F25.3%
A725.3%
D7b925.3%
Bb725.3%
B0725.3%

Key Patterns Detected

PatternFunctionFrequency
D7 -> Gm7Resolution (Minor)4
Gm7 -> D7b9Setup (Major Key)2
D7b9 -> Gm7Resolution (Minor)2
Gm7 -> D7Setup (Major Key)2

Harmonic Highlights

  • Secondary dominant chains (A7-D7) function as V/V to V, creating strong directional tension toward the Gm7 tonic.
  • The B°7 chord acts as a chromatic passing diminished (#ii°), bridging the movement between Bb7 and the rest of the progression via smooth voice-leading.
  • Frequent V-i resolutions (D7b9 to Gm7) reinforce the G minor key center against the song’s inherent Vaudeville-style major-chord borrowings.
  • Tritone substitution (Db7#5 to C7) provides a chromatic descent in the bass, effectively preparing the turnaround to the F (bVII) or tonic.

Improvisation Focus G Minor Blues Scale with emphasis on chord-tone targeting to outline the secondary dominants.

Difficulty Rating 3/5: The progression requires navigating frequent non-diatonic dominant chords and quick secondary resolutions that move beyond a simple minor blues scale.