Chord Distribution Analysis

Chord SymbolCountFrequency
Cmaj7222.2%
F#m7b5222.2%
Em7b5222.2%
A7b13222.2%
B7b9111.1%

Key Patterns Detected

PatternFunctionFrequency
Em7b5 -> A7b13Setup (Minor Key)2
F#m7b5 -> B7b9Setup (Minor Key)1
B7b9 -> Em7b5Resolution (Minor)1
A7b13 -> Em7b5Resolution (Minor)1

Harmonic Highlights

  • The oscillation between bVImaj7 (Cmaj7) and iiรธ7 (F#m7b5) establishes a somber E Aeolian foundation while emphasizing subdominant minor functions.
  • The Em7b5 to A7b13 sequence functions as a secondary ii-V, introducing chromatic tension that often suggests a modal shift toward the subdominant (Am) or a bVII7 resolution.
  • Frequent use of the V7b9 (B7b9) provides a high-tension dominant resolution to the tonic i, requiring precise navigation of the diminished sound.

Improvisation Focus Minor ii-V-I vocabulary and the E Altered scale over the B7 dominant.

Difficulty Rating 3/5: Navigating the dark, minor-key functional harmony and the frequent secondary ii-V shifts requires a solid grasp of guide-tone connections.


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The Real Book - Volume II
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