I’ve convinced my 3.5 yr old this is Anna and Elsa so I can listen to real music once

You don't want to upset your child, I get it, no one, (well, no one sane), likes making someone else upset, but you do understand as the parent you have full authority to tell your kid you don't want to listen to the music they like right? That sometimes the parents want something different from their kid?

Still the best rendition of Battle of Evermore in my book.