Moment Obama raps Eminem's Lose Yourself at Detroit rally

Eminem has introduced former US President Barack Obama at a presidential campaign rally in Detroit.

"I have done a lot of rallies, so I don't usually get nervous," Mr Obama said.

"But I was feeling some kind of way following Eminem," before he rapped the words to Lose Yourself - the theme song to Eminem's semi-autobiographical film 8 Mile.