i've replayed the game with the ost on and i think sekilos jazz - straight, gymnopedie no. 1, jato (the lion) and 2 virgule 4 all fuck, with ariadne's thread and asterion being my favorite
the first time around however i played with my own music on (send me straight to jail if you want but i don't often find ost's to be a strong suit for vn's), specifically lianne la havas's self-titled album, and now the songs and the game are inseparable in my mind. also that album is great and paper thin off of it kinda fits the vn??