Man, people seem to criticize the music of Breath of the Wild a lot. I can understand where they're coming from, to a degree, but the game really does have some amazing tracks. Case in point, here's my favourite final dungeon theme in the series. It's dark, and sinister, but also hopeful. It gives you the sense that there's finally an end in sight, but when the classic Ganon's theme comes in, you also know that the end of the road will present a great challenge. Overall, it does a great job of building up to the finale of a great game.
Edit: I also love the references to other tracks in the series. Most notably, of course, is the short excerpt of the main theme, but there's also some Zelda's Lullaby hidden within, and the melody reminds me a lot of the Ballad of the Wind Fish. Plus, the whole song in general gives me Hyrule Warriors vibes.