The Concept - The Bb 32 Bar Rhythm Changes Etude, consisting of 4, 8-measure phrases, is a well known chord progression among Jazz musicians. The chordal movement occurs every two beats. This etude stresses the chord tones that change every two beats.

• Use Bb scale starting on F
• 3rd of G7 chord on third beat (B)

• Ebma7 arpeggio, hints at Cmi9
• Note the Db (C#), which hints at F's sharp (#)5

• Usage of Db scale, leading to Cmi

• Note the indication of G7 (dominant) chord, against Cmi7 chord
• Strong indication of F7, by stating its chord tones (C-A-F,Eb)

• 3rd of Bb chord on first beat (D)
• Note chromatic passing notes up to G in next measure.

• Note descending Eb scale
• E07 descending arpeggio

• Descending Bb scale, landing on third of G chord
• 3rd of G chord on third beat (B)

• Even though the chord is a Cmi7, the arpeggio, E-G-Bb-D, hints at a C9...
• Which then leads into the F7 chord

• Bb arpeggio (desc)
• 3rd of G7 chord on third beat (B)
• Note of G7 chord (B-D-G-F)

• Cmi7 chord uses notes of parent chord, Bb, major scale
• 3rd of F7 chord on third beat (A)...
• Landing on minor third of Dmi7 chord (F)

• Note usage of chromaticism A-Gb
• Gb arpeggio leading into Cmi7

• Cmi arpeggio (descending)
• B arpeggio (ascending)

• Usage of Bb scale
• b7 of Bb chord on third beat (Ab)

• Usage of Bb scale
• On Ebmi7, the Gb note hints at the minor aspect of Ebmi7-the third of the chord is lowered by one half step

• 3rd of Dmi7 chord on first beat (F)
• 3rd of G7 chord on third beat (B)
• Note the usage of the Ab on the third beat. The Ab actually makes the G7 chord a G7(b9)

• Cmi7 (9) arpeggio
• C# note hints at F7+5

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©2005 Tony Ventura