Back in November 2012, Handwavy was just a twinkle in my eye. I had toyed with natural user interfaces in the past, but when I received the Leap Motion dev kit it was clear that a revolution was about to begin. AirHarp is the result of a weekend worth of hacking in C++ with OpenGL and my music programming library, muskit. A commercial version of AirHarp is planned, but the version you see here is open source. Enjoy!