In response to the demand for pre-sale tickets, Jay-Z and Eminem have added second dates to both of their Home and Home Tour stops, which will take place at Detroit's Comerica Park (now September 2 and 3) and New York's Yankee Stadium (September 13 and 14). Tickets for all four shows will go on sale Friday at 10 a.m. on LiveNation.com.

Earlier this week, the pair taped a performance for the "Late Show With David Letterman" that will air Friday night.

When the stadium dates were first announced, Eminem said in a press release, "This is a once-in-a-lifetime set of shows and I know we're both really going to bring it to our hometowns. The fans are going to love this and so am I. It's gonna be historic."

"These shows are like a dream come true," Jay-Z offered. "I've always hoped that hip-hop could play any stadium like other genres of music. How perfect is it that Eminem and I get to play our hometowns and show how far the live rap experience has come? Fun and historic — a great combination all around the board."

Speaking with ESPN's Dave O'Brien and Rick Sutcliffe during a game between the Yankees and the Tigers, Eminem said of the event, "We had talked about doing something together again soon anyway — we just tried to come up with the best way and biggest way to do it.

"We've done things together, smaller shows and whatnot," he continued. "But I'm not sure we've ever done anything this big."

"I look for opportunities to work with Em," Jay-Z added. "Any time we get a chance to collaborate on things ..."

Em and Jay have teamed up onstage before, performing "Renegade" together at a "DJ Hero" event last June.

Are you excited for the Home and Home Tour? Sound off in the comments below!