The sound of the original theremin frightened audiences of spooky and science fictiony movies in the '50s and '60s, and while this digital replication is perhaps a little less chilling it's also a lot less physical. It's the so-called Therenect from Martin Kaltenbrunner, created using the Open Frameworks and OpenKinect libraries. To play just hold your hands up, allow the software to detect them, and then let the digital falsetto flow, as Martin kindly demonstrates for you below.
