I think I've heard their stuff before, but I didn't care much for it. Usually if I'm curious about a group, I'll turn on kawaii-radio.net for a bit and request one of the group's songs. It's a pretty good jpop station, they have a great library. I mean, during the rush hours sometimes people will request a lot of crappy anime OP's, but the super happy fun jpop hour is great. I'm sure you could find Kiki Kids and listen to a few of their albums.