Chord Distribution Analysis

Chord SymbolCountFrequency
Bbmaj9614.0%
Gm949.3%
Fmaj949.3%
Cm949.3%
C737.0%
C7#524.7%
F7#524.7%
Bbm924.7%

Key Patterns Detected

PatternFunctionFrequency
Gm9 -> C7#5Setup (Major Key)2
C7#5 -> Fmaj9Resolution (Major)2
Cm9 -> F7#5Setup (Major Key)2
F7#5 -> Bbmaj9Resolution (Major)2
Am7b5 -> D7Setup (Minor Key)2
C7b9 -> Fmaj7Resolution (Major)1
F7 -> Bbm7Resolution (Minor)1
C7 -> Gm9Resolution (Minor)1
Bbm9 -> Eb7Setup (Major Key)1
Gm7 -> C7Setup (Major Key)1

  • Harmonic Highlights

    • Employs classic ii-V-I progressions in F major and frequently tonicizes the IV chord (Bb major) via ii-V.
    • Prominent use of altered dominants (C7#5, F7#5, C7b9) to heighten tension and drive resolution.
    • Features a chromatic shift from IVmaj9 to iv minor (Bbmaj9 to Bbm9) creating a lead-in to the V chord.
    • Includes instances of tritone substitution (Db7 for G7) and descending chromatic dominant sequences.
  • Improvisation Focus Targeting chord tones and extensions, especially altered scales (e.g., Altered, Lydian Dominant) over the frequent altered dominant chords.

  • Difficulty Rating 4 (Advanced Intermediate). The complex altered dominants, temporary modulations, and chromatic movements demand a sophisticated harmonic ear and technique.