This thing is wrong on so many levels. Your fingers shouldn't have to work at 6:30am. J-pop should never be played at 6:30am. And there is nothing "perfect" about being woken up by an alarm clock.
Course, that's just my $US0.02. If you're a DDR fanatic and can see yourself enjoying this, rather than smashing it into a million pieces/throwing it out a window, knock yourself out! It's only $US16.