This is a song Eminem had secretly wrote in to his notebook, and thought about releasing it as a song, but it never got published, someone found it and leaked it on Pastebin, Eminem has not come out and said anything about it, and it still exists.

There was even a contest for what instrumental would’ve been the best for the lyrics to be in,
this beat was the winner of the contest, hosted by an anonymous person.

https://www.youtube.com/watch?v=CWzJCSOTI6U