Chord Distribution Analysis

Chord SymbolCountFrequency
Am7915.5%
D7610.3%
Bbm758.6%
Cm746.9%
G635.2%
Eb735.2%
B7#1123.4%
Em23.4%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)5
Bbm7 -> Eb7Setup (Major Key)3
B7#11 -> EmResolution (Minor)2
Em/D -> A7/C#Setup (Major Key)2
Bm7b5 -> E7Setup (Minor Key)2
E7 -> Am7Resolution (Minor)2
Fm7 -> Bb7Setup (Major Key)2
F#m7 -> B7Setup (Major Key)1
Bb7 -> Ebmaj7Resolution (Major)1
Am7b5 -> D7Setup (Minor Key)1
D7 -> GmResolution (Minor)1

Harmonic Highlights

  • The opening sequence (G6 to Bbm7-Eb7) utilizes a chromatic ii-V to approach the ii7 (Am7), functioning as a tritone substitution for the VI7 chord.
  • Frequent secondary dominants (A7/C#, B7#11) and “side-slipping” ii-V patterns create a dense, non-diatonic landscape that briefly tonicizes multiple key centers.
  • The bridge employs minor ii-V-i movements (Bm7b5-E7-Am) and sudden shifts to Ebmaj7, showcasing Jimmy Van Heusen’s signature use of sophisticated modal interchange.
  • Consistent use of “back-door” dominant resolutions and cycle-of-fourths motion (Bm7-E7-Am7-D7) provides a restless harmonic foundation beneath the melody.

Improvisation Focus Guide-Tone Voice Leading: Navigating the rapid succession of non-diatonic 3rds and 7ths is essential to outline the shifting ii-V-I centers.

Difficulty Rating 4/5: The constant modulation and frequent use of tritone substitutions require an advanced understanding of functional harmony and quick mental transposition.


📚 Standard Available in:

The Real Book - Volume I
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