Something I noticed.

When going through the files of Undertale, I found an unused track called mus_kingdescription. It’s basically a regal version of Determination. I’ve seen a theory that it was meant to be used when Asgore is being described (example: when the music cuts out while Papyrus mentions Asgore after his fight when you spare him.) A theory I have is that it was either a placeholder for, or a precursor to Burgentruckung and wasn’t meant to be in the final game at all, or was removed because it didn’t fit before the Asgore fight and was replaced by Burgentruckung because it fits better.