• 'The Monster' collaborators Eminem and Rihanna perform onstage at the 2014 MTV Movie Awards at Nokia Theatre L.A. Live on April 13, 2014 in Los Angeles, California.

'The Monster' collaborators Eminem and Rihanna perform onstage at the 2014 MTV Movie Awards at Nokia Theatre L.A. Live on April 13, 2014 in Los Angeles, California. (Photo : Getty Images/Frederick M. Brown)

Music producer Jeff Bass has nothing but good words about "Rap God" rapper. The two worked together in several projects and one of their most successful collaborations is the Academy Award winner "Lose Yourself."

In an interview with Billboard, Bass said Eminem is "the top." Having worked with the "Rap God" raper, the producer has a high standard with every artist that he has worked.

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"They have to actually know who they are and what they want to do, as far as the artist that they want to be," Bass said. "The only thing that's changed for me is that I get to see that now."

In 2002, Bass and Eminem worked on the song "Lose Yourself," which went on to become the first number-one hit of the latter in the United States, where it sold more than 6 million copies. Still, it failed to beat "Love the Way You Lie" and "Not Afraid" as Eminem's best-selling song.

"Lose Yourself" was a success not only in the U.S. but also in many other countries including the United Kingdom and Australia. Having stayed on top of the charts for 23 weeks, it was declared by the Guinness Book of World Records as the Longest Running Single at Number One for a Rap Song.

In 2002, Eminem starred in "8 Mile." "Lose Yourself" was one of the songs in the film's soundtrack album.

Eminem wrote the lyrics of the song and created the music with Bass and Luis Resto. In 2003, it became the first rap song to win the Academy Award for Best Original Song.

Both Eminem and Bass did not attend the awarding ceremony. Present during the event was Resto, who gave the acceptance speech.

"He's creative," Resto said of Eminem at the time. "He has symphonies in his head."

Watch the music video of "Lose Yourself" here: