Chord Distribution Analysis

Chord SymbolCountFrequency
C6516.7%
G7516.7%
Dm7413.3%
C0726.7%
Bm726.7%
E726.7%
F626.7%
Am726.7%

Key Patterns Detected

PatternFunctionFrequency
Bm7 -> E7Setup (Major Key)2
Dm7 -> G7Setup (Major Key)2
Bm7b5 -> E7b9Setup (Minor Key)1
E7b9 -> Am7Resolution (Minor)1
Em7b5 -> A7b9Setup (Minor Key)1
A7b9 -> Dm7Resolution (Minor)1

Harmonic Highlights:

  • Frequent use of secondary dominants and minor ii-V progressions, notably Bm7-E7 leading to Am and Bm7b5-E7b9 resolving to Am.
  • The Bbmaj7 (bVIImaj7) chord functions as a modal interchange, introducing a significant chromatic color outside C major.
  • The D7/A (V7/V) acts as a strong dominant preparation, reinforcing the return to the G7 dominant.
  • The C07 (C diminished 7th) is employed as a non-diatonic passing or dominant substitute chord within the tonic region.

Improvisation Focus: Chord tone targeting and arpeggios over the rapid harmonic changes.

Difficulty Rating: 4 (Advanced Intermediate). It requires navigating frequent secondary dominants, precise minor ii-V progressions, and non-diatonic chords like Bbmaj7 and C07.