If you can’t remember when you last turned it on, that’s a bad sign. If it’s more than a year since you last powered it up, even worse. If you’re not even occasionally using a piece of gear it can be hard to justify keeping it around. If you don’t know when you used it last, you probably won’t be using it again anytime soon. Let it go! This idea has been in the pipeline for a while, but the impetus to finally push it to completion was my Fundamentals of Western Music class at the New School. I have been drawing scales and chords on the chromatic circle by hand for a long time, and I wanted to be able to produce them automatically.