Chord Distribution Analysis

Chord SymbolCountFrequency
Bm7b558.3%
Fmaj758.3%
Gm758.3%
G746.7%
C746.7%
Bb7#1135.0%
Ab735.0%
Dm735.0%

Key Patterns Detected

PatternFunctionFrequency
Gm7 -> C7Setup (Major Key)3
Fmaj7 -> Bb7#11Setup (Major Key)2
Em7b5 -> A7b9Setup (Minor Key)2
A7b9 -> Dm7Resolution (Minor)2
Cm7 -> F7Setup (Major Key)2
F7 -> Bbmaj7Resolution (Major)2
Bbm7 -> Eb7Setup (Major Key)2
Bm7b5 -> E7b9Setup (Minor Key)2
Fmaj7 -> C7Setup (Major Key)1
C7 -> Fmaj7Resolution (Major)1
E7b9 -> Bm7b5Resolution (Minor)1
E7b9 -> Am7Resolution (Minor)1
Am7 -> D7Setup (Major Key)1
D7 -> Gm7Resolution (Minor)1

Harmonic Highlights

  • Extensive use of chromatic side-slipping, specifically the G7 - Ab7 - G7 sequence, which creates momentary tension against the primary tonal center.
  • A series of descending chromatic ii-V cycles (Dm7 - Db7 - Cm7 - F7) facilitates a smooth transition toward the subdominant Bbmaj7.
  • Incorporation of the “backdoor dominant” (Eb7 to Fmaj7) allows for a non-traditional but elegant resolution to the tonic major.
  • The use of Bm7b5 and Bb7#11 illustrates sophisticated modal interchange, bridging the D minor and F major tonal areas.

Improvisation Focus Voice leading through descending chromatic ii-V sequences.

Difficulty Rating 3/5. While the melody is intuitive, the rapid harmonic rhythm and frequent chromatic substitutions require precise navigation of secondary dominants.


📚 Standard Available in:

The Real Book - Volume II
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