It is a new mod in the cool musical series. What kind of opponent is going to confront Boyfriend this time? It is a fox, and you know him well! Tails is the best friend of Sonic. But he behaves more than strangely now. What is wrong with him? The fox has been transformed into his evil version by some unknown virus. He is very aggressive, and Boyfriend seems to be in trouble now. Will you lend your hand to the guy and help him follow the rhythm? Do your best to catch every single beat of the music!