User blog comment:MiniDaggers/RWBY Volume 2: Director's Commentary/@comment-24573226-20160925200658/@comment-24573226-20160925213147

Songs seem to be more generally accepting of "covers". Artist cover songs by other artists all the time and it's considered a tribute or honor. Not so much written works. It'd be fun, though. Can you imagine, for instance, Stephen King putting out a Game of Thrones fanfiction?