'S' key starts the game. 'A' key starts endless demonstration.
In this game you have to press Z, X, or C in perfect timing after the song has been played. Score two points for perfect timing, one point for good timing, and a penalty for bad timing and misses.
The game is over when penalties reach 20.
When you reach 1000 points or more, you get a message saying "Click Rumia's Ribbon!". However that isn't a requirement. Clicking her ribbon goes to EX-Rumia mode in which the rhythm is much faster than normal.