Chord Distribution Analysis

Chord SymbolCountFrequency
Fm7617.1%
Bb7617.1%
Abmaj7411.4%
Eb638.6%
Bbm738.6%
Eb738.6%
C7#925.7%
Gm725.7%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)6
Bbm7 -> Eb7Setup (Major Key)3
Eb7 -> Abmaj7Resolution (Major)3
C7#9 -> Fm7Resolution (Minor)2
Gm7 -> C7Setup (Major Key)2
C7 -> Fm7Resolution (Minor)2
Abmaj7 -> Db7Setup (Major Key)2
Cm7 -> F7Setup (Major Key)1

Harmonic Highlights

  • Employs a recurring i-IV (Fm7-Bb7) progression, creating an F Dorian modal landscape typical of the hard bop era.
  • Features frequent modulations to the relative major via Bbm7-Eb7-Abmaj7 ii-V-I sequences.
  • Utilizes a “backdoor” Db7 dominant chord resolving to Abmaj7, adding sophisticated subdominant minor chromaticism.
  • Incorporates secondary dominants such as C7#9 and F7 to facilitate transitions between the F minor and Bb minor tonal centers.

Improvisation Focus F Dorian mode integrated with the F Minor Blues scale.

Difficulty Rating 3/5: While the ii-V-I cells are standard, the performer must fluidly navigate the shifts between F minor and Ab major at a brisk hard bop tempo.