Former U.S. President Barack Obama didn’t just speak at a rally for U.S. Vice President Kamala Harris on Tuesday. He also rapped.

Obama was in Detroit — where rapper Eminem grew up — to show his support for the presidential candidate ahead of the November election. Eminem introduced the former president to the crowd.

“I’ve done a lot of rallies, so I don’t usually get nervous,” Obama said at the podium, as attendees cheered in the background. “But I was feeling some kind of way following Eminem.”