Chord Distribution Analysis

Chord SymbolCountFrequency
G7b9412.1%
Cm7412.1%
F7412.1%
Bb626.1%
C#0726.1%
Bb/D26.1%
Bb726.1%
Gm726.1%

Key Patterns Detected

PatternFunctionFrequency
G7b9 -> Cm7Resolution (Minor)4
Cm7 -> F7Setup (Major Key)2
Gm7 -> C7Setup (Major Key)2
Am7 -> D7Setup (Major Key)1
Abm7 -> Db7Setup (Major Key)1
Cm7b5 -> F7Setup (Minor Key)1

Harmonic Highlights

  • Utilizes a “Rhythm Changes” derived I-VI-ii-V framework, enhanced by a C#°7 passing tone to provide chromatic ascending bass motion from ii to I/3rd.
  • Features a series of descending chromatic ii-V sequences (Am7-D7 to Abm7-Db7 to Gm7-C7) that momentarily pull the ear away from the Bb tonic.
  • Employs the subdominant minor (Cm7b5) during the final turnaround to create a “jazzier” b6-to-5 tension before resolving to Bb6.

Improvisation Focus Voice-leading through rapid, non-diatonic ii-V chains using Bebop scales and chord-tone targeting.

Difficulty Rating 3 (Intermediate): While the foundation is a standard swing feel, the chromatic ii-V sequences require quick mental shifts and precise melodic targeting at Horace Silver’s typical tempos.