I’ve just released an I’ve written, which makes a musical instrument out of your Android phone . It’s called SoundSurf, and it converts your hand-movement – or, in fact, the rotation of the phone – into a sound. If you know the old electric instrument called Theramin, this one’s quite like it.

You can use it to create weird stuff to add to your music. You can also use it to annoy your neighbors.

Get it here. It’s free!

Update: a new guerrilla ad I’ve created for the application, using merely a bit of imagination and some brute force upon my co-workers: