At the time of this writing, there is a part of this level where an enemy and orb are unreachable, so it brings anxiety to the completionist in me :P. Otherwise, it's a great theme!

This one! This one is my absolute favorite. As the song starts out, the bass is a groove already, and with each instrument that comes in the song becomes more and more interesting, with that guitar work really tying up the whole thing in a pretty bow. That funky rhythm and the synths also give the track the drifty, dreamlike sound I really enjoy in much of the game's soundtrack, which suits some of the absolutely bizarre moments like Container Heaven as well.

Mysterious Cat Tower? Reminds me of OneShot, where a cat mysteriously got to the tower...