Chord Distribution Analysis

Chord SymbolCountFrequency
Ebmaj7413.8%
Bb7413.8%
Fm7310.3%
E0726.9%
Em726.9%
Am726.9%
D726.9%
Gb0726.9%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)3
Am7 -> D7Setup (Major Key)2
Bb7b9 -> Ebmaj7Resolution (Major)1

Harmonic Highlights

  • The progression utilizes a #iv°7 (E°7) chromatic passing chord to transition between the IVmaj7 (Ebmaj7) and the v7 (Fm7) for smooth voice-leading.
  • The bridge modulates to G Major via a sequence of ii-V-I units (Am7-D7-Gmaj7), requiring a temporary shift in the tonal center.
  • An extended back-cycle turnaround (VI7-II7-V7-I7) creates a strong harmonic pull to return to the home key of Bb major.

Improvisation Focus

  • Fluidity in navigating Major ii-V-I patterns and secondary dominant cycles.

Difficulty Rating

  • 3/5: The diatonic A sections are straightforward, but the bridge’s modulation and the rapid circle-of-fifths turnaround require moderate harmonic awareness.

📚 Standard Available in:

The Real Book - Volume VI
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