Chord Distribution Analysis

Chord SymbolCountFrequency
Bbmaj7414.8%
Fmaj7414.8%
Eb7311.1%
Cm7311.1%
F7311.1%
Dm727.4%
G727.4%
Gm727.4%

Key Patterns Detected

PatternFunctionFrequency
Bbmaj7 -> Eb7Setup (Major Key)3
Cm7 -> F7Setup (Major Key)3
Dm7 -> G7Setup (Major Key)2
Gm7 -> C7b9Setup (Major Key)2
C7b9 -> Fmaj7Resolution (Major)2
F7 -> Bbmaj7Resolution (Major)2
Em7b5 -> A7b13Setup (Minor Key)1

Harmonic Highlights

  • Frequent use of the bVII7 chord (Eb7), functioning both as a backdoor dominant to Fmaj7 and as a tritone substitute leading to Dm7.
  • Classic iii-V/ii-ii-V-I progression (Dm7-G7-Gm7-C7b9-Fmaj7) showcases strong functional harmony.
  • Clear temporary tonicization of the subdominant (Bb major) via ii-V-I progressions (Cm7-F7-Bbmaj7).
  • A colorful iiø-V (Em7b5-A7b13) leading deceptively from the relative minor (D minor) to the subdominant (Bbmaj7).

Improvisation Focus Targeting Chord Tones.

Difficulty Rating 3 (Intermediate). Features standard ii-V-I progressions alongside modulations, tritone substitutions, and a deceptive cadence requiring attention to altered dominants.