Crocodile Cacophony is probably my favorite out of K. Rool's boss themes, helped by the fact that his DKC2 boss battle is my favorite of his boss fights. So much creativity went into that one, and the product turned out simply great. I'm happy to know the theme made it into Ultimate! Assuming it's a remix, now we'll have to wait to hear a clear version, straight from the OST, begins, in a similar vein to how we're still waiting for the full version of Gangplank Galleon. If not, that's fine. The original's still really good.
Now if only we could get some Big Boss Blues in here, as well...