Chord Distribution Analysis

Chord SymbolCountFrequency
Bb7616.7%
Fm7411.1%
F7411.1%
Eb6411.1%
Ebmaj725.6%
Eb25.6%
D725.6%
Db725.6%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)4
Bbm7 -> Eb7Setup (Major Key)1
Eb7 -> Abmaj7Resolution (Major)1
Bb7sus -> Ebmaj7Resolution (Major)1

Harmonic Highlights

  • Features an extended dominant cycle (G7–C7–F7–Bb7) in the A section, functioning as an elongated turnaround to the tonic Eb.
  • Uses chromatic side-slipping (D7 to Db7) as a transitionary harmonic bridge before entering the secondary dominant sequence.
  • The B section shifts to the subdominant (Abmaj7) via a ii–V (Bbm7–Eb7), providing a traditional tonal relief from the A section’s dense dominant motion.

Improvisation Focus The Eb Bebop scale for the head, transitioning to Mixolydian and Altered scales to navigate the rapid cycle of fourths.

Difficulty Rating 3/5 because while the AABA structure is standard, the speed of the dominant substitutions in the A section requires advanced harmonic navigation.


📚 Standard Available in:

The Real Book - Volume II
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