Here's the original Stickerbrush Symphony, I don't think the Brawl remix captured the atmosphere very well, as good as it was
Stickerbrush Symphony is great, but I think this might be even better
I like this one a lot too
And the final boss theme is really good as well
Aquatic Ambience from DKC1 is great too
DKC3 SNES's soundtrack seems vastly underrated. This one's hard to stop listening to
This one's a gem
There's also these
The ones below here are linked because of the media limit
https://youtu.be/3C9ahuXAFVw
Final Boss theme:
https://youtu.be/kieWydrYCn4