I was just listening to the Kirarin Revolution Song Selection 4 tracks, and damn Yuu has the best of the solos of the Milky Way songs.
Wow thanks for that, I had no idea that there were solos of these songs!
Getting them right now, so I'll have to wait a bit until my curiousity is satisfied... But yeah, from what I've heard before, Kikka has one of the better voices :3
EDIT: Listening to her solos now and wah, she sounds so good!
They better make use of her vocals in the future