i love the mysteriousness of these pieces! in "In the Middle of Bubbles," the bell-like sounds representing the bubbles are a very nice touch and add a lot of soul to the song. i especially like your piano sound, though, very pleasant! "origins" is by far my favorite, there's a lot going on but it doesn't subtract from the piece, it's very bouncy and adds to your bubble theme, and is a very nice credits theme. the ending returns to that mysterious feel of your first track while maintaining the feel of a journey now ended.
this was a great listen! i love your musical decisions within each song to represent the scene you were building. nice work!