Chord Distribution Analysis

Chord SymbolCountFrequency
Ebmaj7213.3%
G7/D16.7%
Cm716.7%
Cm7/Bb16.7%
Am7b516.7%
Ab716.7%
Gm716.7%
C716.7%

Key Patterns Detected

PatternFunctionFrequency
G7/D -> Cm7Resolution (Minor)1
Gm7 -> C7Setup (Major Key)1
C7 -> Fm7Resolution (Minor)1
Bbm7 -> Eb7Setup (Major Key)1

Harmonic Highlights

  • The progression features a prominent $Imaj7 - V7/vi - vim7$ movement ($Ebmaj7 - G7 - Cm7$), common in Great American Songbook standards to bridge the tonic and relative minor.
  • A chromatic descent occurs via $Am7b5$ to $Ab7$, where $Ab7$ acts as a tritone substitute for $D7$, functionally targeting the $Gm7$ ($iii$) or providing a smooth transition to $Fm7$ ($ii$).
  • Frequent $ii-V$ sequences tonicize the subdominant ($Ab$ Major) using $Bbm7 - Eb7$, requiring the soloist to navigate rapid shifts in key centers.
  • The harmony blends major and minor modal colors, specifically utilizing the $ii-V$ of $F$ minor to create a darker, more melancholic texture within the primary $Eb$ Major landscape.

Improvisation Focus Targeting guide tones (3rds and 7ths) to highlight the smooth voice leading through shifting $ii-V-I$ cells.

Difficulty Rating 3/5: The moderate tempo allows for melodic development, but the constant modulation between major and minor $ii-V$ sequences demands solid harmonic fretboard or keyboard visualization.


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The Real Book - Volume I
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