Two of the biggest recording artists—let alone rappers—in the entire world were planning two joint concerts. There was only one logical outcome: tickets would sell out as quickly as they were released. Such was the case for Eminem and Jay-Z’s planned performances in Detroit and New York in September. Now, according to Billboard, they’re adding one date to each venue, boosting the total to four shows in all.

With pre-sale tickets selling quickly earlier this week for the concerts in the D and BX, scheduled for September 2 and 13, respectively, it was clear that the people wanted more. So that’s what they’ll get. The added shows will be September 3 at Comerica Park in Detroit and September 14 at Yankee Stadium in New York.

Em and Jay taped for Late Show With David Letterman earlier this week. The show, including a chat with Letterman, Slim and Hov’s rooftop performance, and a Top 10 read by Eminem will air tonight.

Tickets go on sale to the general public today at 10 a.m. at livenation.com. —Adam Fleischer