Some quality arranging in this! Whimsical and playful piano playing in the first section, into a very different and even a little ominous second section. I appreciate the bubble inspiration here - feel like short, resonant tones are just the go-to for that kind of imagery.
Section three is more of the same as section one with a different flavor. You're a natural with some of those chord progression and lead lines woven atop. The bass interlude was a nice change of pace to help round out this part before closing with the down-tempo, almost tired-sounding outro. Some really good ideas in here, great work. :)