You know music is owned by peoplecorporations, and they hold the rights for usage of said music, right? Licensing copyrighted music is hella expensive, enough to make huge gaming companies remove songs from games, to even think about a single developer making use of it.
That’s not how that works at all. In the United States (where the rights-holder for Thriller is located), crediting the original copyright holder is typically okay for a derivative work (in this case, a remix or cover) if it falls under fair use. Using a remix in a commercial product would not fall under fair use because you’re making a profit from a product that uses someone else’s copyrighted work, so a simple credit is not enough; Licensing fees would still have to be paid. Based on my insider knowledge, a song like Thriller could easily reach into seven figures in licensing costs.