Chord Distribution Analysis

Chord SymbolCountFrequency
Gm7818.2%
Am7715.9%
Fmaj749.1%
D749.1%
C749.1%
Dm736.8%
G736.8%
Bb7#1124.5%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)4
Gm7 -> C7Setup (Major Key)4
D7 -> Gm7Resolution (Minor)3
Dm7 -> G7Setup (Major Key)3
Fmaj7 -> Bb7#11Setup (Major Key)2
Bbm7 -> Eb7Setup (Major Key)1
Eb7 -> Abmaj7Resolution (Major)1
A7 -> Dm7Resolution (Minor)1
C7 -> Fmaj7Resolution (Major)1

Harmonic Highlights

  • The A section utilizes a diatonic I-ii-iii-ii scalar motion (Fmaj7-Gm7-Am7-Gm7), creating a smooth, linear foundation in F major.
  • A IV7 chord (Bb7#11) acts as a Lydian Dominant substitute, providing sophisticated non-diatonic tension within the subdominant area.
  • The bridge features a sudden modulation to the flattened mediant (Ab major) via a ii-V sequence (Bbm7-Eb7), requiring a shift in tonal perspective.
  • Frequent secondary dominants (D7 leading to Gm7; G7 leading to C7) create a strong functional drive through the cyclical turnarounds.

Improvisation Focus Navigating the chromatic voice-leading and tonal shift during the bridge’s modulation to Ab major.

Difficulty Rating 3/5; the A sections are accessible diatonically, but the bridge’s rapid modulation and the use of dominant alterations require intermediate harmonic awareness.