Chord Distribution Analysis

Chord SymbolCountFrequency
Gm11712.7%
F/Db712.7%
Fadd9/A610.9%
Gbmaj7#1147.3%
Dm923.6%
Bb/Gb23.6%
Fm923.6%
F/G11.8%

Key Patterns Detected

PatternFunctionFrequency
C7alt -> Fm9Resolution (Minor)1

Harmonic Highlights

  • Frequent use of Gbmaj7#11 (bIImaj7) acts as a shimmering Neapolitan-adjacent color, providing non-functional subdominant movement within the F major landscape.
  • Polychordal slash chords such as F/Db (Dbmaj7#5) and F/G (G13sus) prioritize upper-structure resonance and cluster-based textures over traditional diatonic function.
  • Rapid modal interchange seamlessly shifts between F major and parallel modes like F Dorian (Fm11) and F Phrygian (Gbmaj7), requiring agile tonal navigation.
  • Chromatic descending sequences (G13#11 to Gbmaj9#11 to Fm11) utilize tritone-based voice leading to bridge disparate harmonic regions.

Improvisation Focus The Lydian Mode, specifically navigating the #11 extensions across major-third related slash chords and bIImaj7 structures.

Difficulty Rating 5/5: The tune’s non-functional transitions, shifting tonal centers, and specific upper-structure voicings demand an advanced command of modal interchange and modern jazz vocabulary.