Poni Wilds, absolutely. Probably the best route theme of the entire franchise, it was so beautiful.
Guzma's encounter and battle themes, along with Lusamine's first battle theme are also amazing.
Other stand outs are the Totem battle, Mt Lanakila, and Seafolk Village at night.
I found the Champion theme comparatively underwhelming. I get it, but it got kind of annoying after a while. I was also really disappointed with Vast Poni Canyon, it felt too upbeat and techno considering the area and the stakes of the story.
It was a really good soundtrack, but in a way that was atmospheric rather than memorable in some instances.
