Co-written with and produced by her older brother Finneas O’Connell, Eilish crafts music for permanently grey skies using moody, heavy synths, creating a dirge that’s in diametric opposition to her breathy, girly voice. The sound is creepy, especially when the bassline beats take a cue from late ‘90s horror movie music and drop very low or all the way out as if the floor just fell from under your feet — a move that’s perfected in standout track “you should see me in a crown.” In a Saw-esque twist, she sampled a dental drill for “bury a friend". Her clipped, direct delivery on “bad guy”, the album’s first track, makes it clear that all the scary men out there should reassess who’s the badass ("I like it when you take control / Even if you know that you don't / Own me, I'll let you play the role"). She just may be the beast under the bed — or the person best equipped to help fight it off.