This was a cool idea that DJ Khalil had and started with the crazy-sounding line that was the bass part. I doubled it with electric bass and guitar and then added these screeching chords on guitar at the end of the phrase using a distortion and whammy pedal. I like how that came out because you can't tell what it is and it almost sounds like vocals that have been pitched up. It's very creepy and fits the feeling of the song.