To begin with, it's an Atlus title.
+1
It's also a lot like Ouendan EBA.
+1,000,000
And you have to alternate between tapping icons on the bottom screen in time with music, as well as pressing scrolling directional commands that appear on the top screen, also to music.
Here's a video.
I wish I had had the foresight to pre-order this game so that I could've supported awesome Atlus!