Kind of a theremin-style instrument for live performance. You need to connect a MIDI controller/keyboard to get this to work.
Once you've cloned the repo, be sure to run
npm install && bower install
before attempting to run the application.
Then to get things running,
grunt serve
Thanks to the lovely yeoman-fullstack generator, the grunt serve
command will fire up the Express server with the built-in MIDI bridge and Socket.IO, and the browser will open the client-side application with the visuals provided by P5js and fancy data-binding using AngularJS. Nice.