Chord Distribution Analysis

Chord SymbolCountFrequency
Gb7519.2%
G7519.2%
Bbm727.7%
Eb727.7%
A727.7%
G0713.8%
Dbmaj713.8%
Bm713.8%

Key Patterns Detected

PatternFunctionFrequency
Bbm7 -> Eb7Setup (Major Key)2
Bm7 -> E7Setup (Major Key)1
Em7 -> A7Setup (Major Key)1
Ebm7 -> Ab7Setup (Major Key)1
Dm7 -> G7Setup (Major Key)1

Harmonic Highlights

  • The structure utilizes a chromatic oscillation between Gb7 (V7) and G7 (bVI7), creating a persistent tension that subverts traditional dominant-to-tonic resolution.
  • It features “side-slipping” ii-V sequences (e.g., Bbm7-Eb7 to Bm7-E7) that move by half-steps, forcing the soloist to navigate rapid, non-diatonic key shifts.
  • The inclusion of a Dbmaj7 provides a sophisticated, non-functional harmonic detour that momentarily breaks the minor blues feel with bright, major-third coloring.
  • The form extends the standard 12-bar blues into a complex, through-composed harmonic journey that emphasizes subdominant movement through various tonal centers.

Improvisation Focus Navigating rapid, chromatic ii-V chains using the Diminished Scale and melodic sequencing.

Difficulty Rating 4/5 โ€“ The unconventional “twisted” form and high-velocity harmonic changes require advanced fretboard visualization and precise rhythmic timing to outline shifting tonal centers.


๐Ÿ“š Standard Available in:

The Real Book - Volume I
๐Ÿ›’ Buy on Amazon
As an Amazon Associate I earn from qualifying purchases. Check the Hal Leonard Jazz Song Finder to make sure that the standard is indeed in the book before buying it.