Yesterday I was searching the internet for a rare Wardell Gray CD when I found this company called Doubletime Records that had it, along with a great selection of other rare jazz cds. So I placed my order via e-mail and when the confirmation came back it was signed Jamey Aebersold!
"Wow!" I wrote back "Are you THE Jamey Aebersold?!" He was indeed. He runs a rare record shop with his wife in addition to his instructional business.
That inspired me to get out one of my Aebersold books and CD's last night. And I was struck by his comment that the Dorian minor , Dominant 7th and Major scales for a given key are really just different ranges of one scale, so that you can reduce iim7 - V7 - I progressions down to just 12 patterns, one for each key.
But on the Diminished chromatic tuning, those 12 different patterns can be further reduced down to just 3 different patterns because the C, Eb, Gb, A scales are identical except for the starting hole, as are the Db, E, G, Bb and the D, F, Ab, B.