I think the Pure was my favorite of the tracks because of how the rhythm felt like it was half a beat too early making it more intimidating and unsettling. I enjoy faster songs more and that was the fastest and most involved.
Some of the earlier songs felt a tad repetitive at times with the ocarina sounds. I liked when you would shake it up at times, but I think it could have gone further to make each song evolve more than they did.
That's just a minor nitpick though since overall it's a very nice OST.