Chord Distribution Analysis

Chord SymbolCountFrequency
Fm71123.9%
Bb7715.2%
Ebmaj748.7%
F748.7%
C7b948.7%
Gm736.5%
C736.5%
F#0736.5%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)5
C7b9 -> Fm7Resolution (Minor)3
Bb7 -> Fm7Resolution (Minor)2
Bb7 -> Ebmaj7Resolution (Major)2
Ebmaj7 -> Bb7#5Setup (Major Key)2
Bb7#5 -> Fm7Resolution (Minor)2
Gm7 -> C7Setup (Major Key)2
Cm7 -> F7Setup (Major Key)1
Fm7 -> C7b9Setup (Major Key)1
C7 -> Fm7Resolution (Minor)1
Gm7 -> C7b9Setup (Major Key)1

Harmonic Highlights

  • Frequent use of ii-V-I progressions in Eb major, often embellished by the Bbm6 (iv) which functions as a subdominant minor substitute for chromatic voice leading.
  • Incorporation of secondary dominants (C7 to F7) creating a descending circle of fifths motion that reinforces the eventual return to the dominant Bb7.
  • Strategic use of the F#o7 passing diminished chord to bridge the F7 and Fm7, providing smooth chromatic step-wise movement in the bass and inner voices.
  • Tension is heightened through V7#5 and VI7b9 alterations, emphasizing the romantic, ballad-style resolution typical of the Great American Songbook.

Improvisation Focus Guide tone navigation to highlight 3rds and 7ths across shifting secondary dominants.

Difficulty Rating 3/5: While the tempo is usually slow, the performer must accurately track frequent chromatic chord substitutions and secondary dominant resolutions.


๐Ÿ“š Standard Available in:

The Real Book - Volume VI
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