I mostly focused the theme on the story but I could argue that most of the songs have some sort of ostinato going on in the background (especially at the bossfights) which is somewhat similar to a ticking clock but that's quite the stretch lol.
For the sun of water thing, the songs are a combination of an "area" theme and that "area's" bossfight song. I decided to combine them into a single song instead of having many loops so that's probably why it's a big mood change.
Thanks for your feedback I will look into the other two later!