I need an opinion on the new American Idol Encore game for the XBOX 360!?

I need an opinion on this game. I don't think I would like it very much but I'm trying to get my fiance into gaming some. We tried Boogie for the Wii but it was pretty bad I thought. She really likes watching American Idol so I thought that maybe she would get into this game somewhat. I just need some opinions on this game before I drop $70 bucks on it and it isn't any good. I guess my question is, Will a grown up woman like this game?