My Little Pony XLVIII: I say Ol' Chap, how about those Equestrians?

[Kindablue]

Actually, it's only a big deal if you want to use a famous person's rendition of a song. Licensing the performance of a song by, I dunno, the Red Hot Chili Peppers would cost you an arm and a leg. Making your own cover of one of their compositions is, iirc, 11 cents.

Oh, what? You've never heard of the legandary band Stories? :P But yeah, that's exactly what I mean, unless I'm misunderstanding you: the original version would've been too expensive so they hired the Stories singer to screw himself over and exchange a steady stream of royalty checks for whatever hourly session rate he charged them.