Chord Distribution Analysis

Chord SymbolCountFrequency
Fmaj7225.0%
Bbmaj7225.0%
Eb7225.0%
Bm7112.5%
E7b13112.5%

Key Patterns Detected

PatternFunctionFrequency
Bm7 -> E7b13Setup (Major Key)1
Bbmaj7 -> Eb7Setup (Major Key)1

Harmonic Highlights

  • The transition from Fmaj7 (bIII) to Bm7-E7b13 establishes a secondary ii-V sequence that momentarily shifts the tonal center away from D minor, creating a sophisticated “side-slipping” harmonic tension.
  • The sequence of Bbmaj7 (VI) to Eb7 functions as a bII7 (tritone substitute for the dominant V) or a “backdoor” resolution, facilitating a smooth chromatic descent typical of the Bossa Nova idiom.
  • The harmony relies on parallel movement and dominant extensions, specifically using the b13 on the E7 chord to provide a melodic bridge between the tonic and subdominant areas.
  1. Improvisation Focus Guide tone navigation through shifting ii-V cells and the application of the Lydian Dominant scale over the Eb7 chord.

  2. Difficulty Rating 3/5. The relaxed tempo masks frequent non-diatonic modulations and secondary dominants that require precise knowledge of chord tones and voice leading.


📚 Standard Available in:

The Real Book - Volume I
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