KeyedUp Piano Keyboard Display

This application produces no sound.

This app is a modification of my other app, Fretful, which is a guitar fretboard visualizer. This one shows piano instead. It will show any key, in any scale, on a piano keyboard, and can show highlights of individual notes and chords in color on top of that scale.

There are details for how most of it works with the screenshot images, so look there for instructions. If there is anything you don't understand or that doesn't seem to work as you expect you can ask about it.