Late edit: Here's an example of a multi-sensor music application that I'd call much closer to 'true innovation' - TouchKeys. http://www.kickstarter.com/projects/instrumentslab/touchkeys...

Instead of making a sensor array to just replicate machines that already exist, it is a sensor array that adds a new dimension of creativity and expressiveness. Its these types of innovations we should really be celebrating. I imagine this will be the new norm for high end keyboards in the future.