Chord Distribution Analysis

Chord SymbolCountFrequency
Bb6718.9%
Cm7718.9%
F7718.9%
B038.1%
Bbmaj7/D38.1%
F7#525.4%
Bb7#525.4%
Ebmaj725.4%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)6
Bb7#5 -> Ebmaj7Resolution (Major)2
F7 -> Cm7Resolution (Minor)1

  • Prominent use of diminished chords (B0, Db0) acting as chromatic passing chords or altered dominant substitutes, typically leading to the ii chord (Cm7).
  • Consistent ii-V-I progressions in Bb major, often featuring an altered dominant (F7#5) to increase tension and resolution.
  • The I - #Io - ii - V (e.g., Bb6 - B0 - Cm7 - F7) movement creates a strong chromatic voice leading into the ii chord.

Improvisation Focus: Diminished Scale (Half-Whole) for navigating the characteristic diminished chords.

Difficulty Rating: 3/5 - The recurring non-diatonic diminished chords and altered dominants require specific harmonic understanding beyond basic diatonic vocabulary.