The Collidoscope is an incredible musical synthesizer that is designed to be played by two musicians at a time.
This synthesizer is equipped with two keyboards instead of one. It also features a rather intelligent sample-pulling setup -- all you have to do is lay down and record and audio track before using a knob to set what it is that you're sampling.
The Collidoscope isn't available for sale just yet, but there will be a lot of musicians standing in line if it is. This synthesizer isn't just an engineering gimmick, but actually opens up a world of musical abilities. It gives artists the ability to work together to create music on the fly without their flow being interrupted. This makes it perfect for live performances.