Here's something that always intrigued me; When soloing over a 3 6 2 5 turnaround (Cmaj; E-7 A7 D-7 G7) do you think of the 3 & 6 chords as a descending 2/5 progression or do you think of the whole progression as being diatonic and the 6 chord acting as a color chord. I've asked many players this question & have gotten many mixed responses.