It is very different, but I actually kinda like it for that, because there's much more variety in the gameplay (or it least it feels that way) compared to your average DDR or Beatmania clone. Instead of just pressing buttons as they appear you have to memorize various cues, which are different for each minigame. My favorite game as a kid was WarioWare: Mega Microgame$, which isn't a rhythm game, but does have a very similar structure and was made by the same team at Nintendo.