Song from an animatic I can no longer find

So there was this owl house animatic a watched a while ago and im guessing it got copyrighted or something due to the song but I can't find the song itself for the life of me. I only remember the title being something like "the concept of evil" or something like that but I never get the results im looking for, nor can I remember the lyrics other than the last few lines being "doubt has grown in me" I think? If yall happen to have an idea what it is please let me know! It was sung by a male singer too if it helps