Borderlands is a new musical instrument for the iPad. Explore, touch, and transform sound with this new interface for granular synthesis, a technique that involves the superposition of small fragments of sound, or grains, to create complex, evolving timbres and textures. Borderlands emphasizes gestural interaction over knobs and sliders. Create, drag, and throw pulsing collections of grains over a landscape of audio files, or use the built-in accelerometer to sculpt sound with gravity. Borderlands comes ready to play with default sample content included, but you can load your own sounds too. Watch the original teaser trailer here. Click here to download the default sounds for free.