Chord Distribution Analysis

Chord SymbolCountFrequency
Ebmaj7410.8%
Bbm7410.8%
Dbmaj7410.8%
Bb7410.8%
Ebm738.1%
Ab738.1%
Bbm625.4%
B725.4%

Key Patterns Detected

PatternFunctionFrequency
Ebm7 -> Ab7Setup (Major Key)3
Ab7 -> Dbmaj7Resolution (Major)3
Gm7b5 -> C7b9Setup (Minor Key)2
Dbmaj7 -> Gb7Setup (Major Key)1
Cm7b5 -> F7b13Setup (Minor Key)1
F7b13 -> Bbm6Resolution (Minor)1
Bb7 -> Ebm7Resolution (Minor)1
Bb7 -> Ebm6Resolution (Minor)1
C7b9 -> Gm7b5Resolution (Minor)1
F#m7 -> B7Setup (Major Key)1
Fm7b5 -> Bb7Setup (Minor Key)1

Harmonic Highlights

  • Modal Interchange: The use of Ebmaj7 (IVmaj7) against Bbm7 (im7) creates a distinctive Bb Dorian flavor, substituting the standard minor IV chord for a major seventh.
  • Relative Major Pivots: Frequent ii-V-I sequences in Db major (Ebm7โ€“Ab7โ€“Dbmaj7) provide a bright tonal contrast to the somber Bb minor home key.
  • Functional Turnarounds: The use of Cm7b5โ€“F7b13 reinforces the Bb minor center, utilizing the harmonic or melodic minor for a strong V-i resolution.

Improvisation Focus

The Bb Dorian mode, specifically highlighting the G natural to accommodate the Ebmaj7 and Bbm6 chords.

Difficulty Rating

3 (Intermediate): The unusual IVmaj7 in a minor context and the constant shifting between Bb minor and its relative major require sophisticated modal awareness.


๐Ÿ“š Standard Available in:

The Real Book - Volume VI
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