For the Ending
If you add a duplicated beginning onto the ending (keeping the natural pause/rest in you hear in song with loop on), it sounds really cool. It would finish out the song very nicely, and connect the beginning and end and just wrap it all up good. I just got the idea because the loop was on.
By the way, very cool, mysterious, adventure song, I loved the piano at the end, and if it's too abrupt or something, just listen to the end with loop on and you'll see what I mean (just shorten up the pause a bit that you hear while listening with loop, and then end it within the first 8 seconds of the duplicated beginning, wherever sounds the best).
Unless you were intending the song to have loop on in the first place. If that's the case, then never mind lol.
Anyway, 10/10.