Chord Distribution Analysis

Chord SymbolCountFrequency
F737.0%
Dbmaj737.0%
Ebm737.0%
Bb624.7%
F7#524.7%
Bb724.7%
Ebmaj724.7%
Ebm624.7%

Key Patterns Detected

PatternFunctionFrequency
Bb7 -> Ebmaj7Resolution (Major)2
Ebm6 -> Ab7Setup (Major Key)2
Cm7 -> F7Setup (Major Key)2
Bb7b9 -> Ebm7Resolution (Minor)2
Ebm7 -> Ab7b9Setup (Major Key)2
F7 -> Bbmaj7Resolution (Major)2
Ab7b9 -> Dbmaj7/FResolution (Major)1
Ebm7 -> Ab7#5Setup (Major Key)1
Ab7#5 -> Dbmaj7Resolution (Major)1
Ab7b9 -> Dbmaj7Resolution (Major)1
C#m7 -> F#7Setup (Major Key)1
F#7 -> Bmaj7Resolution (Major)1
Cm7b5 -> F7Setup (Minor Key)1

Harmonic Highlights

  • Employs modal interchange via the minor subdominant (Ebm6) and bVII7 (Ab7), injecting a sophisticated “Strayhorn” atmosphere into the primary Bb major framework.
  • Executes a pivotal modulation to Db Major (bIII), utilizing ii-V-I sequences that shift the center to the relative major of the parallel minor.
  • Incorporates chromatic voice leading through altered dominants (F7#5, Bb7b9) and diminished passing chords (Eº7), smoothing the transitions between distantly related tonal centers.

Improvisation Focus Chord Tone Mapping: Prioritizing the 3rds and 7ths is essential to successfully navigate the frequent modulations between the Bb and Db tonal centers.

Difficulty Rating 3 (Intermediate). While the slow ballad tempo provides time to think, the constant shifting between major and minor-related tonalities requires a strong understanding of functional harmony.