i dont know the names, but id say kujas theme, freyas theme(the gizalmake grotto song), "melodies of life"(the world map and credits song), and melodies of life when garnet hums it during the fmv thingy. yeah, theres a ton of cool songs in ff9!
edit: oh, and duh, both final boss themes(kujas and necrons)
reminds me of a pink floyd laser show...i dont know why