Photo by Axelle/Bauer-Griffin/FilmMagic

50 Cent’s Final Lap tour stopped in Detroit on Sunday night (September 17), and Eminem surprised the crowd by coming out to perform ‘Paitently Waiting’ and ‘Crack A Bottle’ with his longtime friend and collaborator.

After singing together, Eminem told the audience,

“Detroit, make some noise for one of the best friends I’ve ever known: 50 Cent. And also, make some noise for hip-hop’s 50th birthday, y’all — it’s still hip-hop’s 50th birthday. Detroit, I love y’all!”

When 50 Cent posted a clip of the performance to Instagram, he wrote, “????Bro when I do anything with EM people just go crazy they know he really my boy. I love him till death!”

Eminem signed 50 Cent to Shady Records before the release of Get Rich Or Die Tryin’ in 2003. They’ve since collaborated on songs like “Gatman & Robbin,” “My Life” and “Is This Love.” 50 Cent shared earlier this year that Eminem approached him about getting back into the studio with Dr. Dre, but no concrete release plans have been revealed yet.