Chord Distribution Analysis

Chord SymbolCountFrequency
Bbmaj71260.0%
Cm7420.0%
F7420.0%

Key Patterns Detected

PatternFunctionFrequency
Cm7 -> F7Setup (Major Key)2
F7 -> Cm7Resolution (Minor)1
F7 -> Bbmaj7Resolution (Major)1

Harmonic Highlights

  • The progression is driven by a repetitive ii-V-I cadence (Cm7 - F7 - Bbmaj7), providing a very stable and predictable tonal center in Bb Major.
  • Extended durations of the tonic (Bbmaj7) emphasize a “home” key, allowing for melodic development over static harmony before resolving subdominant tensions.
  • The harmonic rhythm typically shifts every two measures, aligning with the 3/4 waltz time signature to create a clear, cyclical feel.
  • Standard arrangements often incorporate a secondary dominant (Bb7) leading to the IV chord (Ebmaj7), introducing brief chromaticism into an otherwise diatonic framework.

Improvisation Focus Bb Major Bebop scale with a focus on rhythmic phrasing that accents the first beat of the 3/4 waltz meter.

Difficulty Rating 2/5: The harmony is predominantly diatonic and cycles through basic ii-V progressions, though the triple meter requires specific rhythmic discipline.


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The Real Book - Volume I
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