There's been a lot of memorable feuds this year: Drake vs. Pusha T and Kanye West, Nicki Minaj vs. Cardi B, and of course, Eminem and MGK. Although the back-and-forth felt relatively brief, it's still one of the biggest moments in hip-hop this year. Machine Gun Kelly fired off "Rap Devil" as a response to Eminem's shade in "Not Alike," which ultimately resulted in the MGK's diss track, "Killshot." The "Killshot" beat seemed perfect for Em's lyrical onslaught, but the instrumental wasn't actually cooked up for Em specifically.

IllaDaProducer, who produced a ton of Kamikaze, revealed how Eminem's "Killshot" came about on the latest episode of Genius' Deconstructed. He revealed that the beat was actually produced for U.K. rapper Giggs who ultimately didn't use it.

"When I originally started the beat for ‘Killshot,’ it was actually for Giggs,”  he said. “He always asked me for these horror movie beats. That’s what I was thinking when I made the ‘Killshot’ beat was something mean, gritty, grimy.

He continued to explain that he was actually on vacation with his girlfriend celebrating the release of Kamikaze when he heard "Rap Devil" and realized Em had more work to do.

“When I realized it was gonna go to Eminem was the morning that MGK dropped ‘Rap Devil.’ I was in Miami, with my girl, on vacation celebrating Kamikaze, and I see MGK’s diss," He recalled. "Right away, I went into my folder and tried to find the hardest beats possible. I sent [Eminem] like two beats. It was like eight o’clock at night and I’m like, ‘Yo, I sent Giggs some crazy shit.’ I hit Giggs, and he told me what beat he used, he didn’t use that one [‘Killshot’]. I sent it right away. Like, here’s one more.”

Peep IllaDaProducer talking about "Killshot" below.