If you have been working on playing scales, chords, and harmony in general, this set is the next step towards getting your ears and fingers coordinated. This set is a continuation of Volume 3, but in much more depth. Features 23 CD tracks and most go through all 12 keys! The first two CDs contain slow practice versions and the second set of CDs contain medium/fast versions. Rhythm Section: Jamey Aebersold (p); John Clayton (b); Mike Hyman (d). Suggested Prerequisite: Volume 3 - The ii/V7/I Progression. Titles: 5 Turnaround Tracks * 6 Cycle Tracks * Coltrane Blues * Some of the Things I Am (an exercise in substitute ii/V7s) * 6 ii/V7 Tracks * Coltrane Changes in all 12 Keys * B-flat Rhythm Changes (slow tempo) * Hale Bop * Guess What Key I'm In (Blues with "Giant Steps" and descending changes).