Chord Distribution Analysis

Chord SymbolCountFrequency
Am7819.5%
D7717.1%
G6614.6%
A7614.6%
Em749.8%
Gmaj737.3%
Bm737.3%
E7b1324.9%

Key Patterns Detected

PatternFunctionFrequency
Am7 -> D7Setup (Major Key)7
Em7 -> A7Setup (Major Key)4
D7 -> Am7Resolution (Minor)2
Bm7 -> E7b13Setup (Major Key)2
E7b13 -> Am7Resolution (Minor)2
D7 -> Gmaj7Resolution (Major)1
A7 -> Em7Resolution (Minor)1

Harmonic Highlights

  • Employs a secondary dominant II7 (A7) to create a strong pull toward the V7 (D7), a hallmark of early swing-era tension and resolution.
  • Features a chromatic passing diminished chord (Bm7 - Bb°7 - Am7) to bridge the iii and ii chords, providing smooth voice-leading in the turnaround.
  • Relies on the functional I-vi-ii-V foundation (G6 - Em7 - Am7 - D7), establishing a clear diatonic framework typical of the Great American Songbook.

Improvisation Focus G Major Bebop scale, specifically targeting the C# (major 3rd) over the A7 chords to highlight the secondary dominant shift.

Difficulty Rating 2/5: The predictable harmonic rhythm and lack of complex modulations make it an accessible vehicle for practicing diatonic navigation and basic secondary dominants.