Chord Distribution Analysis

Chord SymbolCountFrequency
Bb71023.3%
Fm7818.6%
Cm7614.0%
Ebmaj7511.6%
Db737.0%
C724.7%
B724.7%
Eb624.7%

Key Patterns Detected

PatternFunctionFrequency
Fm7 -> Bb7Setup (Major Key)8
Bb7 -> Ebmaj7Resolution (Major)4
Bb7 -> Fm7Resolution (Minor)1
Abm7 -> Db7Setup (Major Key)1
Db7 -> Gbmaj7Resolution (Major)1

Harmonic Highlights

  • The A-section is built on the I-vi-ii-V7 turnaround (Ebmaj7-Cm7-Fm7-Bb7), a foundational “ice cream change” cycle that provides continuous circular momentum.
  • The bridge employs a chromatic descending dominant chain (Db7-C7-B7-Bb7), which functions as an elongated turnaround to re-establish the tonic Eb major.
  • The use of secondary dominants (such as C7 leading to Fm7) and tritone substitutions (A7#11) adds sophisticated voice-leading to an otherwise diatonic framework.

Improvisation Focus Mastering chord tone targeting within the I-vi-ii-V cell to navigate the rapid harmonic rhythm.

Difficulty Rating 2/5: The predictable repetitive structure is beginner-friendly, though the bridge requires basic knowledge of chromatic movement and secondary dominants.


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The Real Book - Volume VI
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