Some of you might remember Mikuni Shimokawa, who did all of the opening and ending themes for the Full Metal Panic anime, including Sorega Ai Deshou and Tomorrow. If you're curious about any of her other music, here's a taste:
http://www.youtube.com/watch?v=tKMQJDhWCuI
It's a track from one of her non-anime singles. You won't find it in any of her re-release collections or studio albums.