Chord Distribution Analysis

Chord SymbolCountFrequency
Am91244.4%
Dm9414.8%
Fmaj7#1127.4%
Ebmaj727.4%
Emaj713.7%
Eb713.7%
Ab7sus13.7%
Dbmaj713.7%

Key Patterns Detected

PatternFunctionFrequency
Ab7sus -> Dbmaj7Resolution (Major)1
Bm7 -> E7b9Setup (Major Key)1
E7b9 -> Am9Resolution (Minor)1

Harmonic Highlights

  • The opening sequence establishes a static A Dorian modal foundation, moving between the i (Am9) and iv (Dm9) chords.
  • A striking chromatic shift occurs via Fmaj7#11 to Emaj7, using Lydian structures to momentarily pull away from the minor tonic.
  • The progression from Ebmaj7 to Ab7sus to Dbmaj7 employs non-functional parallel movement and distant key modulations that challenge standard tonal expectations.
  • The Bm7 to E7b9 turnaround provides a functional ii-V resolution to ground the sophisticated chromaticism back into the A minor center.

Improvisation Focus A Dorian is the primary scale, requiring shifts to Lydian modes and altered dominants to navigate the rapid mid-section modulations.

Difficulty Rating 4/5: The piece requires high-level harmonic awareness to maintain melodic continuity across sudden, non-diatonic key shifts and parallel major-seventh structures.


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The Real Book - Volume VI
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