Not sure if the Japanese really have any business touching rock and roll. It's even weirder that they didn't get the real Ami and Yumi to play themselves. Guess they didn't have cute enough voices. Hi Hi is standard Cartoon Network fare. You'd recognize the type just as you'd recognize a standard Nicktoon or a standard Disney show. It's sorta like an updated version of Josie and the Pussycats but with an increased potential to be insulting. Kaz may annoy the heck out of you, but the very basic take on Japanese mannerisms and on band/manager relationships may fire off a nerve somewhere. The animation is nowhere near the level of Foster's Home for Imaginary Friends or Ruby Gloom. This show has already been done before too. Several years earlier a less successful but far superior show incorporated the rock element into its episodes to better effect. That show was called Generation O.