I got Theatrhythm Final Fantasy the other day and it's actually surprisingly great. I'd recommend it especially since its pretty cheap at most used game places
Did you get the original, or Curtain Call? Both are a lot of fun, although I'm still kind of disappointed that Curtain Call changed the event stages from the first game to plain old field stages. Also still hoping that Theatrhythm Dragon Quest will get a localization.
Probably cheaper that way. Curtain Call has all the stages from the first game so you're not missing out on anything aside from the old event cutscenes.