I really liked the battle music, and they actually had a few more than two tunes:
Gale - Used in Home World; good stuff
Brink of Death - Used in Another World; also really good
Fates (Gods of Destiny) - Boss music? Maybe this was just for FATE
Orphan of Flame - Another major boss theme, Lynx?
Dragon God - Dragon God boss music
Some environment music like Jellyfish Sea was used also for the battles, just to keep it interesting. In fact, I think that happened quite a bit in the game. (You pointed out People Seized with Life, for example.)
Yeah, I agree with Star-Stealing Girl (fucking translations are different for everybody). That's one of my favorites, along with the title theme (Time's Scar) and Chronopolis. I was kinda disappointed in the whole wind theme, but at the same time, it really made a point to illustrate the sheer loneliness and despair in the Pocket Dimension. Here's a game full of music, and you go into the final boss fight and there's nothing but this sad wind blowing. I think it had an effect on its own.
Anyway, no matter how the music was used, Mitsuda really did produce an excellent soundtrack with this game, probably the best one he has done. (Why is it I seem to be
defending Mitsuda every three months? The man shouldn't NEED defending!)