Chord Distribution Analysis

Chord SymbolCountFrequency
Ab71666.7%
Gb7416.7%
Abm714.2%
Db714.2%
Bbm714.2%
Eb7#914.2%

Key Patterns Detected

PatternFunctionFrequency
Abm7 -> Db7Setup (Major Key)1
Bbm7 -> Eb7#9Setup (Major Key)1

Harmonic Highlights

  • Uses an expanded 24-bar blues structure that remains static on the IV7 chord (Ab7) for the initial eight measures.
  • Incorporates non-functional parallel dominant movement (Gb7 to Ab7), creating a modal, post-bop aesthetic that avoids traditional V-I resolutions.
  • Features a sophisticated turnaround utilizing a “backdoor” ii-V (Abm7-Db7) that cycles back to the tonic Eb7#9 via a Bbm7 bridge.

Improvisation Focus Eb Minor Blues scale and Eb Dorian mode.

Difficulty Rating 3/5. While the slow harmonic rhythm provides ample space for phrasing, the atypical 24-bar form and non-functional dominant shifts require strong structural awareness.


πŸ“š Standard Available in:

The Real Book - Volume II
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