PD. Game needs ".tapsonic" folder to start. If it's not in the correct folder, game will close automatically.
Pentavision is the maker of DJMax, which is the original music game, means the songs of the game are (most of them are) original, written only for the DJMax game. Unlike Tap Tap and Guitar Hero etc etc which uses pop songs for their game. And this is the main reason i like DJMax so much.