Chord Distribution Analysis

Chord SymbolCountFrequency
Bb6712.3%
F7712.3%
Cm610.5%
G747.0%
Gm735.3%
Cm735.3%
Bb23.5%
Bbaug23.5%

Key Patterns Detected

PatternFunctionFrequency
Cm -> G7Setup (Major Key)4
G7 -> CmResolution (Minor)4
Cm7 -> F7Setup (Major Key)3
Cm6 -> F7Setup (Major Key)2
D7 -> GmResolution (Minor)2
Fm7 -> Bb7#5Setup (Major Key)2
Gm7 -> C7Setup (Major Key)1

Harmonic Highlights

  • The progression utilizes a chromatic ascending line cliché on the tonic (Bb - Bbaug - Bb6 - B°7), creating a smooth melodic transition to the ii chord (Cm).
  • Minor line clichés are prominent, specifically on the ii chord (Cm - Cmb6 - Cm6) and the vi chord (Gm - Gm/Gb), necessitating focus on shifting 5ths and 6ths.
  • Frequent use of secondary dominants (G7 to Cm, D7 to Gm) and a functional ii-V-I structure into the subdominant (Fm7 - Bb7 - Eb) provides a classic, cyclical harmonic flow.

Improvisation Focus Voice leading through chromatic line clichés and melodic minor substitutions.

Difficulty Rating 3/5; while the key center remains stable, the performer must navigate constant internal chromatic movement and precise voice leading.


📚 Standard Available in:

The Real Book - Volume V
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