This is what I would have on a soundtrack for this game. Obviously, since I know Magel best, she's somewhat over-represented
01 - Never Die (Jade Rhapsody OP Theme). Slayers Gorgeous. Hayashibara Megumi.
02 - Mask (Magel の Theme/Alternate OP Theme); Bakuretsu Hunters. Matsumura Kasumi, Masami Okui
03 - Ice Blue Eyes (Magel の Image); Rurouni Kenshin. Sakurai Tomo.
04 - Within Unlimited Desires (Cynis Girl の Theme); Slayers Special. Hayashibara Megumi.
05 - Izayoi (Magel の Daydream); Saber Marionette J. Hayashibara Megumi.
06 - Gentou Chouga Juuroku-seiki (Battle Theme 1); Utena. J. A. Ceasar
07 - Tainai Tokei Toshi Orrery (Battle Theme 2); Utena. J. A. Ceasar
08 - Negai (Jade Rhapsody ED Theme). Shogo: Mobile Armor Division. Nemoto Miho.
09 - You Get To Burning (Obsidian Requiem OP Theme/Illystra の theme); Martian Successor Nadeisico. Matsuzawa Yumi.
10 - Gaia's Theme (Nyax の Theme); Battle Arena Toshinden.
11 - Blaze (Abyssal の Theme); Escaflowne
Bonus - Touch My Heart (Magel の Image); Devil Hunter Yohko. Hisakawa Aya.
Haven't decided on themes for the other characters yet…
** An image song is a song that conveys some aspect of a character's personality or story. It is, basically, inspiration for that character.