Chord Distribution Analysis

Chord SymbolCountFrequency
Am1122.4%
Bm7b5816.3%
E7b9816.3%
Dm7612.2%
G724.1%
Cmaj724.1%
A7b924.1%
Fmaj724.1%

Key Patterns Detected

PatternFunctionFrequency
Bm7b5 -> E7b9Setup (Minor Key)8
E7b9 -> AmResolution (Minor)8
Dm7 -> G7Setup (Major Key)2
G7 -> Cmaj7Resolution (Major)2
A7b9 -> Dm7Resolution (Minor)1
Em7b5 -> A7b9Setup (Minor Key)1
A7b9 -> DmResolution (Minor)1

Harmonic Highlights

  • Frequent minor ii-V-i resolutions (Bm7b5 - E7b9 - Am) establish a melancholic Bossa Nova foundation through strong functional tonality.
  • Strategic modulation to the relative major (C major) via standard ii-V-I sequences (Dm7 - G7 - Cmaj7) provides harmonic contrast.
  • The use of A7b9 acts as a secondary dominant (V/iv), creating a chromatic leading tone that resolves strongly to the subdominant Dm7.
  • A diatonic circle of fourths progression (Dm7 - G7 - Cmaj7 - Fmaj7) facilitates a smooth transition back to the ii-V of the home key.

Improvisation Focus A Harmonic Minor (specifically emphasizing the G# leading tone over E7b9).

Difficulty Rating 2/5: The progression follows predictable, standard jazz cadences in both minor and relative major keys, making it highly accessible for intermediate soloists.