great

I like how interesting this song is, despite the severe repetition. It gets more interesting at around 1:20, and I think that chunk in the middle at 2:24 - 3:59 is my favorite part, followed by the build up before it at 1:52 - 2:23. That electronic melody that comes in is nice as well, because it adds a different colour to the piece.
I only have a few issues.
For starters, the repetition is... there's a lot. At the beginning for example, you keep building off of that single melody from the glockenspiel, but every new line that comes in just repeats. There's no variation or twist. That's why I like the slight variation to your glockenspiel melody starting at 2:39 that continues in the background till 4:31. What I suggest doing is moving up the E B G F# G up a third, like G highE B A B during the build.
The next little one that could make the ending a bit more interesting. Instead of having the bass note continue with the sequence E D C D when it's the gloken on its own, keep it at E throughout to make it feel more like an ending.
I still enjoy this song a lot. It's nice on the ears, and it's pretty soothing to listen to as well.

Not bad