There’s a new Run The Jewels song, “Let’s Go (The Royal We),” featured in the post-credits stinger of the new Tom Hardy-starring superhero movie Venom. But that new song is actually based on a piece of music that El-P wrote for another big movie, as the rapper and producer revealed during an interview on Zane Lowe’s Beats 1 show today.

“The essence of the music actually came from a trailer that I submitted for the Blade Runner 2049 trailer, that ultimately they didn’t use,” El-P explained. “I just loved it so much that I was like, ‘I have to use this.’ So basically, I had spent some time working on that, to kind of try and transform it into a beat for essentially Run The Jewels 4, because me and Mike both loved it, and we just thought it was nasty.”

But instead, they ended up using it for Venom. “We got a call that they wanted us to write a record for it, and we were like abso-damn-lutely we will write a record for Venom,” Killer Mike added. “My man Nate in high school introduced me to the Venom character, and I’ve loved it ever since. Just the duality of trying to do righteous, and this rogue is just fighting with you from the inside. I thought it was a perfect match up with the Run The Jewels spirit, so the record turned out dope. It gave us a primer for what I think is going to be a dope next album.”

And that’s not the only thing El-P’s been working on. “In the midst of Jaime getting prepped to be married, and scoring a movie — he scored a movie that’s coming out about Al Capone — it came down to the wire,” Mike said. “He pulled it off like the super-producer/rapper that he is. He comes right out of scoring a movie, is in the middle of planning the details of his wedding, and he pops up and sends me this amazingly dark crazy beat, and I immediately jumped down, and we go in via FaceTime, and we put it together. This is the first Run The Jewels record that we put together not in the same room.”

Listen to “Let’s Go (The Royal We)” and read what El-P and Killer Mike have to say about the upcoming RTJ4 record below.

On RTJ4:

El-P: I think this was a nice little chance for us to kind of get back into a vibe and it’s a decent starting point. I’ve been collecting beats and we’re just going to kind of try and make the grimiest, rawest record we possibly can.

Killer Mike: But in terms of all that’s going on and reflecting with the music, I’ve decided to put more of it into whatever music is coming, because trying to communicate and talk, you kind of get polarized and tried to be made into a political figure, and I’m not. I’m a raw-ass rapper who, when asked my opinion, will give it. My opinions, instead of saying them over radio or television, where I can argue with stupid people who get paid to give you a side, I’m simply going to put on record to mash on those fools circa Eazy-E, Uncle Luke, Ice Cube, the Geto Boys and, just like rap is supposed to do, to give people good music to push through this bullshit.

El-P: We always really were just about making nasty rap records, man. At the end of the day, I think that one of the purest political statements to make is being honest and being raw and being genuine. We never were the type of people who were looking to make records that were addressing specific political situations. If it happens, it happens, and it does on occasion, but we’re not Public Enemy. What we’re trying to do is be two guys in a friendship from different places having the time of their lives and making something that everybody can make the scrunchy face to when they hear.