Veil refers to a vocalist unit. It's the same Veil as the one on this
Fortune Arterial album; I've changed your entry to that instead. As for whether it's
the Lia on vocals, I'll have to listen to it first.
Edit: evidence:
http://www.1stplace-web.com/veil/
Come to think of it, that song by Veil on the Fortune Arterial album
does sound an awful lot like Lia... (I suspected it was Yoko Ishida at first)