Chord Distribution Analysis

Chord SymbolCountFrequency
Abmaj71028.6%
Bb7617.1%
Eb7617.1%
Dbmaj738.6%
Ab625.7%
F725.7%
Bbm712.9%
Fm712.9%

Key Patterns Detected

PatternFunctionFrequency
Eb7 -> Abmaj7Resolution (Major)3
Bbm7 -> Eb7Setup (Major Key)1
Fm7 -> Bb7Setup (Major Key)1
Ebm7 -> Ab7Setup (Major Key)1
Ab7 -> Dbmaj7Resolution (Major)1

Harmonic Highlights

  • Features a classic I - VI7 - II7 - V7 progression (Abmaj7 - F7 - Bb7 - Eb7), utilizing secondary dominants to create rhythmic drive and harmonic tension.
  • Employs F7 (V/ii) and Bb7 (V/V) to introduce chromaticism via the A natural and D natural leading tones, moving outside the diatonic Ab major scale.
  • The movement from Ab6 to F7 utilizes a smooth chromatic voice-leading shift (Ab to A natural), a hallmark of swing-era songwriting.
  • Standard ii-V-I resolutions (Bbm7 - Eb7 - Abmaj7) provide strong tonal stability and clear landing points between the dominant-heavy sections.

Improvisation Focus Chord tone soloing with a specific emphasis on the major 3rds of the secondary dominants (A natural for F7 and D natural for Bb7) to navigate the non-diatonic changes.

Difficulty Rating 2/5. The predictable cycle-of-fifths movement and clear Ab major tonal center make it highly accessible for intermediate improvisers.


๐Ÿ“š Standard Available in:

The Real Book - Volume IV
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