For this Kingdom Hearts fan, the holidays came early. Disney / Pixar / Square Enix kindly granted me access to an early version of the demo for upcoming rhythm game Kingdom Hearts Melody of Memory. It is but a tease of the full version to come, but what's here right now is already super promising. Only four of the expected 140+ musical tracks are available in the demo, but those tracks come with three different playstyles, each with three different difficulty options. That makes for quite the variety while trying to experience, enjoy, and/or master the starter tracks. The official …