Aha want to bet that they're playing the Break Through the Dream on Pop'n Music Fever? It sure looks like that's what they're doing. http://www.youtube.com/watch?v=Gzr8JixiZdQ
I'm no good on my own so we're each taking half of the buttons to pressUooooooooo!! Simon, you're killing our combo!!!Was this game meant to be played by 2 people?