Tomas: I was poking around our new web site and was looking at your lesson on chord families. I poked something wound up on youtube with a grid of your lessons.
In that grid I found a lesson (not yours so don’t go nuts on me) on the movable Major Scale forms. Shapes E,D,C,A and G. I’ve been playing those in my warmup
Using the circle of fifths not realizing what they were. Now I have a new warmup that appears to be even more useful.