Chord Distribution Analysis

Chord SymbolCountFrequency
Ebmaj7617.6%
Bbmaj7514.7%
B0725.9%
Cm725.9%
C#0725.9%
Dm725.9%
D7#525.9%
E925.9%

Key Patterns Detected

PatternFunctionFrequency
Ebmaj7 -> Ab7Setup (Major Key)2
Bb7 -> Ebmaj7Resolution (Major)1
F7 -> Bbmaj7Resolution (Major)1
Ebmaj7 -> Ab7#11Setup (Major Key)1

Harmonic Highlights

  • Utilizes an ascending chromatic sequence (Imaj7 - #I°7 - iim7 - #ii°7 - iiim7) to create smooth, linear voice leading through the first five bars of the Bb major tonality.
  • Employs “backdoor” dominant functionality (Ab7) and tritone substitutions (E9) to create harmonic tension before resolving to the IV (Ebmaj7) or returning to the tonic.
  • Features a secondary dominant cycle (II7 - V7) via the C7 to F7 progression, providing a strong directional pull back to the Bbmaj7 head.

Improvisation Focus Bb Bebop Scale with a focus on chromatic enclosure of chord tones.

Difficulty Rating 3/5: The dense chromatic passing chords and non-diatonic substitutions require precise harmonic navigation and command of “Rhythm Changes” vocabulary at high tempos.


📚 Standard Available in:

The Real Bebop Book
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