Great app, one suggestion

Let me start off by saying this is a really fun and surprisingly expressive app. Sometimes I enjoy playing along to or noodling on top of songs in my iTunes library, and this provides a great way to do that. With that in mind, the only suggestion I would make is to give users an option to change the key of the scale being played (it looks like C major is only implemented Doe Ray Me key). I know this app isnt designed to be a musical instrument per se, but adding a Preferences pane or hotkey to cycle through different keys would go a long way in making this app that much more versatile.

tallorb about Trackpad Magic