Brat arrived on June 7, 2024, and within weeks it had colonised a summer. The lime-green album cover became a meme template; the word 'brat' became a lifestyle descriptor; Kamala Harris's campaign borrowed the aesthetic. But the cultural wildfire was built on a very specific sonic foundation, one that Charli XCX and her production team had engineered with unusual precision and unusual restraint. The album's defining sound is not an accident of vibe or a lucky accident of timing. It is the result of a set of deliberate rules, written before a single track was finished.
The architect of those rules was A.G. Cook, the London-born producer and founder of the PC Music collective who has served as Charli's executive producer across multiple records. The project was overseen by Cook, who helped support the album's ethos through what collaborator Jon Shave describes as a 'sonic rule book,' establishing a set of parameters for the project's producers and songwriters to follow. The most consequential of those parameters was a single prohibition: a ban on drum samples, with Brat's sonic lynchpin instead being the Roland TR-909, the drum machine that was fundamental to developments in dance music subgenres like techno, house, and acid in the late eighties and early nineties. That one constraint shaped everything. Every kick, every hi-hat, every snare snap across the album's fifteen tracks comes from the same machine, which gives Brat a rhythmic coherence that most pop records achieve only accidentally, if at all.
The production team assembled around that rule book was genuinely eclectic. Credited producers include A.G. Cook, Cirkut, George Daniel, Charli XCX herself, Gesaffelstein, Finn Keane, Hudson Mohawke, El Guincho, Jon Shave, Linus Wiklund, and Omer Fedi. Sessions took place across six studios on two continents: Sleeper Sounds in London, Henson in Hollywood, Westlake in West Hollywood, A2F in Miami, Larrabee in North Hollywood, and The Nest in Southampton. George Daniel, best known as the drummer and co-producer of The 1975, was one of the most significant contributors. In a Tape Notes conversation with Cook and Charli, Daniel described the rhythmic logic of the record in plain terms: "808s and 909s really is like the vibe." Cook's role in shaping the final tracks often involved working against the instinct to fill space. Cook describes going through Daniel's tracks and muting things to create more empty space, and the finished songs are ear-grabbingly minimalist, punctuated by abrupt silences. This is production by subtraction, a philosophy that runs through the record from the two-minute-thirteen-second opening track "360," produced by Cook and Cirkut, to the deceptively sparse "Sympathy Is a Knife," which Charli produced with Finn Keane at Sleeper Sounds in London.
Finn Keane, formerly known as EasyFun, co-wrote and produced the lead single "Von Dutch," released on February 29, 2024, and his fingerprints are across the album's most direct, club-facing moments. His success in shaping the zeitgeist through moodier, underground dance sounds was, in his view, part of a larger redemptive arc for PC Music, and he describes the goal as writing music that is 'immediate and fun and hooky, but then also weird and experimental and bright.' That tension is the whole game on Brat. The record wants to destroy a dance floor and make you cry in the same forty-one minutes. "I Think About It All the Time" sits in the tracklist right before the closing track "365," and the contrast is almost violent: a poignant, Streets-esque monologue in which Charli wonders if motherhood is worth sacrificing her career and freedom, immediately dissolving into "365," an audible retelling of going too hard at the club. The TR-909 holds both together. Same machine, same rule book, completely different emotional register.
The songwriting process matched the production philosophy in its spontaneity. Charli's hyper-spontaneous songwriting method meant that initial ideas were often formed in ten-minute freestyles. Jon Shave, who co-wrote the bonus track "Spring Breakers" and contributed to "Sympathy Is a Knife," describes the sessions as unusually focused: "Charli had thought about every single song and what she wanted to say on Brat." That clarity of intention is audible. Brat does not sound like an album assembled from sessions; it sounds like an album that knew what it was before it started. The contrast with its predecessor is sharp. Brat followed Charli's pure pop album Crash, which arrived in 2022. Crash was polished and radio-friendly in ways that Brat deliberately refuses to be. Where Crash aimed for the centre of the pop dial, Brat aimed for the sweaty perimeter of it, and the TR-909 is the thing that marks the distance between those two coordinates.
The album's third single, "Apple," released August 2, 2024, and produced by Charli, A.G. Cook, Daniel, and Linus Wiklund, is maybe the clearest demonstration of what the rule book unlocked. It was written by Charli XCX, George Daniel, Linus Wiklund, and Noonie Bao, and produced by XCX, A.G. Cook, Daniel, and Wiklund. Four producers, one drum machine, and a song that sounds like it came from a single coherent vision. That coherence extended beyond the album itself. The same approach was applied to the album campaign, which saw remixes being recorded and released in time to stay ahead of cultural conversation. The remix of "Girl, So Confusing" featuring Lorde arrived on June 21, 2024, two weeks after the album dropped, and the full remix album, Brat and It's Completely Different but Also Still Brat, followed on October 11. Critics considered it an innovative companion piece to the original album for featuring largely unreleased lyrics, going beyond a simple remix album. The sonic rule book, it turned out, was flexible enough to let everyone in without losing its shape. That is the real achievement of Brat: a record built on constraints that somehow sounds like total freedom.
