Noodling on a synthesizer is normally a solo affair, but Ben Bengler and Fiore Martin have found a way to spice things up. Their Collidoscope lets two musicians play in tandem thanks to the combination of twin keyboards and a clever sample-grabbing mechanism: all you have do is record something and use a hybrid knob/slider to determine what you're sampling. It looks cool (somewhat like a musical, multiplayer Pong), but the big deal is that dueling artists can quickly create a track without breaking their flow. Perfect for live sets, we'd say. The team isn't selling the Collidoscope right now, but there are hints that you'll one day get to buy this competitive composition tool.