If you weren't impressed by the rest of the wares shown off today by Microsoft at their Surface 2 event, there's one accessory you must have missed. This is the Surface Remix Project - one of a line of devices that'll be coming from the company in the near future to make use of the Surface 2 and Surface Pro 2's ability to work with quick-attach keyboard and touch accessories. Here we're aiming at touch-loving DJs with a drum machine vibe and intentions wholly musical.
UPDATE: This cover's name specifically is Music Cover, part of a Music Kit with its software aimed at musicians in the near future. This is, again, one of many Remix Project devices slated for the future.