Chord Distribution Analysis

Chord SymbolCountFrequency
F7411.8%
Bb6411.8%
D7411.8%
Gm7411.8%
Fmaj738.8%
Cm738.8%
C738.8%
B0725.9%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)3
D7 -> Gm7Resolution (Minor)3
Gm7 -> C7Setup (Major Key)3
Am7 -> D7Setup (Major Key)2

Harmonic Highlights

  • Utilizes a tonicized subdominant via a [ii-V] of IV (Cm7 – F7 to Bb6), shifting tonal weight briefly away from the tonic.
  • Features a #iv diminished chord (B°7) acting as a chromatic passing tone to the I chord in second inversion (Fmaj7/C).
  • Employs the “backdoor” bVII7 (Eb7) to provide a sophisticated chromatic resolution back toward the tonic or the iii chord (Am7).
  • Relies on standard iii-VI-ii-V cycles (Am7–D7–Gm7–C7) to navigate the turnaround and maintain cyclical momentum.

Improvisation Focus Voice leading via guide tones (3rds and 7ths) to highlight the frequent secondary dominant resolutions.

Difficulty Rating 3/5: While the melody is straightforward, the performer must navigate several rapid secondary dominants and non-diatonic substitutions typical of Richard Rodgers’ style.


📚 Standard Available in:

The Real Book - Volume I
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