Eminem “Tested” Kendrick Lamar To See If He Had A Ghostwriter

"Kendrick did it, wrote a sick verse, and then everyone came in to listen to it. Eminem said that he did it to test Kendrick because he thought he had a ghostwriter. He then realized that he didn't then claimed [Kendrick] was the best."

To his credit, Kendrick suspected what was going on. In 2014, he discussed the song's recording process during a radio interview. "He brought me out to Detroit, I had a show, and he brought me to the studio to do a hook... I go in, do the hook, and he's like 'I like the hook.' Then I'm like, 'Alright, cool, I'm finna dip,' then he says 'Think you could do a verse?'... The thing with Em which was crazy to me is he kicks everybody out of the studio... I took it as him kicking everybody out to see if it's really you writing those raps that you're writing."

Last year, Eminem released "Campaign Speech," a new nearly-8 minute track that garnered a bunch of strong opinions. The rapper is currently working on a new album.