From my Lessons with Phil's Student Mark Kirk. Learn the ii-V-I pattern in all 12 keys. It is correct starting a pure diminished scale as Phil wrote it, it's old school. It works, it helps you to hear the diminished. Practice in all 12 keys, until fluent. Included is the Locrian #9 scale. The half diminished scale with a #2 (raised 2). These are 4

From my Lessons with Phil's Student Mark Kirk. Learn the ii-V-I pattern in all 12 keys. It is correct starting a pure diminished scale as Phil wrote it, it's old school. It works, it helps you to hear the diminished. Practice in all 12 keys, until fluent. Included is the Locrian #9 scale. The half diminished scale with a #2 (raised 2). These are 4 of the scale groups that Dexter Gordon practiced, the other is Dominant 7th. 5 Scale groups. When I was studying at University of Pittsburgh, Nathan Davis brought in guests each year, and Dexter detailed how he practiced just these five chord/scales.