Whenever I'm at a EDM show, I find myself envisioning an instrument based off of the same chain and gear system that bicycles have. The chain would go through it's loop, activating different physical triggers that the player could mount and unmount. The physical triggers could be any number of percussive instruments or even piano strings of different length. Essentially, the player is able to make a loop for a dance song in real time using physical systems instead of an electronic one.