I've got a few of her songs... techno dance bullshit mostly. You can also hear MEGU-chan sing on her last released DVD
digi+KISHIN. She's got an above average voice, but nothing to write home about. Besides, that was a couple of years ago - her sining career died a quick death. MEGUMI is mostly a TV personaility now (or
tarento as the Japanese would put it). I haven't heard Hanai Miri's new song yet, but I'll probably pick it up because a) I'm curious, and b) I'm an idiot.

Anyways, although Nemo-chan has already been posted here, I think a larger picture would be appropriate....
