Earlier this week, social media lit up with buzz about the leak of a 20-year-old Eminem diss track against Ja Rule and Suge Knight, “Smack You,” along with a handful of other demos.

Hugh McIntyre covers music, with a focus on the global charts. Eminem's Curtain Call has now spent 650 weeks on the U.K.'s albums chart, more than his next two ... [+] longest-running wins combined.