Disney Fantasia: Music Evolved is a fantastic idea that turns you into a full-body conductor with the power of your Kinect Sensor, allowing you to create and share crazy remixes on the fly. However, it just boils down to flailing your arms around in front of the telly like a drunk hailing a cab.
I was deeply conflicted in our full review, but in fairness, I should also point out that I've probably awarded it the lowest score on the internet. Definitely download the demo and try it out for yourself! Note that Kinect 2.0 is mandatory. Thanks to Aeschylus @ HUKD!