Chord Distribution Analysis

Chord SymbolCountFrequency
Fmaj7527.8%
Gm7316.7%
C7316.7%
Abm7211.1%
Db7211.1%
Am715.6%
D715.6%
F615.6%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)3
Abm7 -> Db7Setup (Major Key)2
Am7 -> D7Setup (Major Key)1
D7 -> Gm7Resolution (Minor)1
Db7 -> Abm7Resolution (Minor)1

Harmonic Highlights

  • The progression frequently features a iii-VI-ii-V (Am7-D7-Gm7-C7) leading to the tonic, with D7 functioning as a secondary dominant (V/ii).
  • A sudden chromatic ii-V progression, Abm7-Db7, introduces an abrupt “side-slip” or temporary tonicization to Gb major, creating harmonic tension.
  • The piece consistently returns to the diatonic ii-V-I (Gm7-C7-Fmaj7) in F major after moments of harmonic deviation, solidifying the home key.

Improvisation Focus Navigating both diatonic F Major harmony and abrupt chromatic ii-V substitutions.

Difficulty Rating 3 (Intermediate). The core progressions are standard, but the abrupt chromatic ii-V (Abm7-Db7) requires quick harmonic recognition and adaptation.