Chord Distribution Analysis

Chord SymbolCountFrequency
Bb1541.7%
F7513.9%
Ebmaj725.6%
Ebm625.6%
G725.6%
C725.6%
Cm/Bb25.6%
Dm/Bb25.6%

Key Patterns Detected

PatternFunctionFrequency
Bb7 -> Ebmaj7Resolution (Major)1

Harmonic Highlights

  • The IVmaj7 to iv6 (Ebmaj7-Ebm6) transition utilizes modal interchange, providing a classic subdominant minor resolution to the tonic.
  • A VI7-II7-V7 (G7-C7-F7) cycle of dominants drives the harmonic motion, typical of early “hot jazz” and ragtime-influenced structures.
  • Stepwise diatonic movement over a tonic pedal (Bb - Cm/Bb - Dm/Bb) creates linear interest while maintaining a strong tonal anchor.
  • The bVI (Gb) chord introduces a sudden chromatic shift, serving as a dramatic harmonic pivot back to the tonic Bb major.

Improvisation Focus Bb Major Blues Scale

Difficulty Rating 2/5. The progression relies on predictable swing-era turnarounds and clear functional resolutions, making it very accessible for intermediate players.


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The Real Book - Volume III
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