Geeky and cool.
“InkQuencer is a step-sequencer that plays music based on camera input. People can draw patterns on paper and then play back the pattern by holding the drawing in front of the camera. The program receives the images from the camera and draws a saled down, 32 by 30 pixel isometric version. On each beat from the metronome, the scrubber runs through a new column of pixels and plays a sound if the pixel is black.” – Sebastian Thielke
For more info: Sebastian Thielke