Ever wished you could see the Circle of Fifths (aka Circle of Fourths) displayed on your clock? Well, now you can. And you can even click individual keys to see key signatures, just in case y— hey, wait a minute! Speaking as a sometimes-theory teacher, are you telling me you haven’t learned your keys yet? What are you going to do when your handy Dashboard clock isn’t handy? You’re not going to know your key signature for C# major, that’s what. Or maybe this is a new way of telling time, like, I’ll see you at half past G-flat? I’m confused. Now go get your vaguely new age-looking key signature clock; if nothing else, you’ll look like the music nerd you are:

Circle Clock Beta1 Widget for OS X Tiger [Dashboard Lineup]