Eminem
Rapper Eminem performs 'Not Afraid' at the 2010 BET Awards in Los Angeles June 27, 2010. Reuters/Mario Anzuoni

Before delivering a speech that aims to influence American voters’ choice for his successor, US President Barack Obama had turned to Eminem for warm up.

In a behind-the-scene video of the 2016 Democratic National Convention (DNC) held last month in Philadelphia, Obama was caught on camera listening to Eminem’s “Lose Yourself.” Considered as one of the world’s most powerful people according to Forbes magazine, Obama was seen bobbing his head to the rhythm of Eminem’s hip-hop composition which is part of the 2002 movie “8 mile” soundtrack.

The footage documenting Obama’s warm-up routine also featured other politicians and celebrities rubbing elbows backstage between speeches. At one part, Obama told former US President Bill Clinton that Democratic presidential nominee Hillary Clinton is more qualified than both of them.

“I hope you don’t mind me saying, she’s a little more qualified than you,” Obama told Mr. Clinton, “I included myself in that category.”

“You should be proud of her,” Obama added, to which Mr. Clinton said, “I am so proud,” while looking at Mrs. Clinton, who is vying for the title of being the first female president of the United States. The former First Lady, Mrs. Clinton, served the Obama Administration as the 67th US Secretary of State from 2009 to 2013.

Eminem vs Drake rap battle

As the race for the White House heats up between Mrs. Clinton and Republican presidential nominee Donald Trump, a rap battle is brewing between Eminem and Drake – at least on social media.

Neither Marshall Mathers nor Aubrey Drake Graham confirmed the rumoured rap battle that stemmed from Hot 97 host DJ Ebro “joke.”

"I told Drake that I heard the rumour Eminem was going to gear up to come after him," Ebro said on his morning show.

"He laughed. He was like, 'That’s not gonna happen.' He’s like, 'He’d never do that. And if he did, I got something for him, too,’” the DJ added.

But on his Aug. 4 tour “Summer Sixteen” tour stop at Madison Square Garden in New York, Drake said, “They tellin' lies on Hot 97 and that's how it goes.” By Friday morning, Ebro said on radio,"Drake, you know and I know that the Eminem thing earlier this week was a joke. People took it out of context, ran with it, fine."

Earlier, Drake’s “Views” has beaten Eminem’s billboard record. For nine weeks in a row, Drake’s “Views” held the No. 1 on the Billboard 200 Chart, surpassing Eminem’s eight-week record with “The Marshall Mathers LP.” “Views” remains at No. 1 for a 12th non-consecutive week, according to Billboard.

WATCH: Behind the scenes at the DNC in Philadelphia