I randomly decided to listen to Ephemeral Dream and Innocent Vision again (BGMs from both of Setsuka's stages in SCIII/SCIV) and I really hope they knock it out of the ballpark with the soundtrack on this game because both of those themes (which happen to be the same song, lol) are some of the best I've heard in the game. I haven't had the easiest time of listening to the themes for the stages on most gameplay videos because the voices/sound effects/commentary is distracting, so I can't tell for myself how I like them yet.
SCV was actually quite lacking in the musical department in comparison to SCIV and SCIII, with the only noteworthy one I remember being Dance of the Oracle (but that only popped up when you were versing Viola in Quick Play...).