I'm a total music game freak and love most types of music games that had come over the years (Guitar Hero and Rockband had its moments, but the francise's being milked to death as some noticed). In particular I like how it was used on the DS for that matter (Uedan/EBA and Daigasso! Band brothers to mention a notable few), and this one seems it will join the ranks of GOOD DS music games: Jumping Music or Maestro! Jump n' Music:
The gameplay is interesting and it seems it can get challenging later in the game; plus I love the fact that is has classical music in it.