DIY Improvisation Device

I found an excellent interactive circle of fifths graphic. I took screenshots of a circle I assembled (using this interactive tool) in the treble and the alto clef, pasted the treble clef graphic to one side of a piece of cardboard, and the alto clef graphic to the other, and cut out the circle, leaving a little tab to hang it by. I have really enjoyed using it while I improvise (see my last post).

It kind of reminds me of a natal chart (which can also be a vehicle for improvisation)!