This is just about perfect in everything it does except for one thing. Just one, annoying, painful thing keeping this from being one of the absolute all-time best.

True to the name, the first third of this level is spent echolocating. The lights you carry with you are dim, barely enough to see the ground beneath your icon, so you instead repeatedly send out pulses that let you "see" into the darkness, not through light, but through sound. This works well enough to get you through the level, but it only allows you to see basic textures on the outside layer of structures. There's surely more out there you're missing deeper within, but it just isn't something you can access with your current tools.

Oh sorry were you taking in the atmosphere and forming your own thoughts with the limited information available? Sorry, here's some distracting, moving text telling you exactly what's happening in this level. "Show, don't tell"? Too bad, you're getting show and tell instead. Screw you. This doesn't ruin the part, hell I still think it's pretty good despite that, but its such an easily removable stain that it just hurts to imagine what otherwise would've been near the absolute peak of GD without it.

...Anyway,

I don't mind the text in the following ship part. It's intriguing. I think the fact that "seek" and "meaning" are the last two to get highlighted is definitely intentional. Telling you to look deeper, not only only at the part, but at the level, and at life, and I REALLY FUCKING WISH THE TEXT IN THE FIRST PART HAD THE SUBTLETY OF THIS. Seriously, Tri, what were you on?

...Anyway,

I like to think of the next wave as a peek into what's "above the surface" both metaphorically and literally. A motivation for you to rise up in the following cube (and in your life), and eventually break free at the drop.

And wow what an amazing drop it is. It's breaking free of course, but it's not breaking free into high speed like what's so common, rather it's breaking free into slow speed. It's the easiest part of the level, it's a place to relax, enjoy the absolutely beautiful effects, and take in your surroundings and the world as they really are, fully colored in. It's its own kind of freedom.