The App Store has no shortage of music-creation apps that let you play virtual instruments, beginning with Apple’s excellent GarageBand for iPad which supports Mac projects and AirPlay technology. But if you really want to impress your friends, here’s a $2 download that taps iPad 2’s built-in FaceTime camera and clever programming to actually track the movement of your hands and reproduce guitar sounds as if you were playing the strings for real.

You can pick among several guitars, use effect pedals and even fret chords with your left hand. It’s the closest thing to the air guitar gimmickry – heck, it’s even better than the real thing. We’ve seen creative uses of iPad 2’s front-facing camera before, but nothing like the GhostGuitar app. Here’s to the hoping that developers will focus more on developing Kinect-like apps for Apple’s tablet.

via Ars Technica