Photo: Courtesy of can’t be blue
On Monday night, a Seoul band that started out in Hongdae cafés will open its first European tour at The Underworld in Camden.
can't be blue sold out a 700-capacity solo concert in Seoul last November, after a run of steadily larger headline shows. Monday's room holds around 500, a basement under a Camden corner pub where the back row can see the frets.
The more unusual number is zero, the count of outside producers between the band and its songs. Much of Korean pop is written by teams a label assembles. can't be blue write, arrange and produce everything themselves.
Five college friends who write and produce every note open their first European tour in Camden on Monday. Here is who they are, and what to watch for.
The method is almost domestic. Singer Lee Dohun brings a reference track and a direction, keyboardist Kwon Dahyun works out the chords, guitarist Kim Chaehyun lays a riff over them, and the five fill in the rest together, Dohun told Vogue Korea in June. Nobody hands them a route, he said.
The name came from a café table. The members got stuck on the word blue, in its low sense, and kept throwing variations at it until they landed on its opposite, the band told the news agency Newsis. The joke is that the songs never stop being sad.
Their trick is to run sad lyrics at a quick tempo, over bright R&B arrangements that end somewhere bleak. They said they wanted chords and mixes that do not simply sound happy, but act as "a sound that sits beside you and is sad with you."
The band grew out of a demo. Dohun was working on what became the June 2024 debut single, "Within the words I once called love," heard a band in it, and called friends from his year at Dong-Ah Institute of Media and Arts. Dahyun said he decided the moment he heard it.
Bassist Lee Hwuiwon took about a week. He had steady session work and told Vogue Korea that trading it for a band frightened him; he followed his heart anyway. Drummer Kim Daehun, who joined later, had been a fan of the band's songs before anyone asked him.
Rehearsals run on a fine. Anyone late pays 10,000 won into a pot and the first person through the door takes 40,000, Dohun told Vogue Korea, a rule he credited with keeping the room respectful. With five members, the early bird only collects the full pot when all four others are late.
Before the festivals came Hongdae clubs and cafés, where the band booked the rooms, ran the sound and carried the gear. Looking back for Esquire Korea this month, they called the promise they made then the real starting point: "even if only one person is listening, we do our best for that person."
The listeners multiplied. Spotify named them the first act of its RADAR Korea programme for 2026, and the state content agency KOCCA picked them as an outstanding act in its 2025 Muse On scheme. Vogue Korea traced the breakout to reels the band posted themselves, which spread after TXT's Soobin and former fromis_9 member Lee Seoyeon recommended them.
This year has been a sprint. The EP Prussian Blue arrived in January and the first full-length album, can't be blue, in June, with Stray Kids' HAN on "can't love" and the Japanese singer Murasaki Ima on "blue daisy," which they recorded in Japan. A single, "Fxxkin' Rockstar," followed in September.
Dohun wrote much of that album out of an unrequited love that lasted between a year and a half and two years, he told Vogue Korea. The line he is proudest of in "blue daisy" plays the old petal game, loves me, loves me not, and settles on loves me.
The third EP, bluende, sung entirely in English, is built as five stages running from regret to resignation, the band told Esquire Korea. The title folds blue into blonde. Its title track puts despair over a danceable beat on purpose, so the body moves first and the words arrive a few seconds later.
Europe has met them once before. On 8 July they opened for ATEEZ at Rock in Roma, at the city's Ippodromo delle Capannelle. All five name Coachella within five years as the goal, and Dohun defined the mainstream they want as music everyone can enjoy listening to together.
One thing to watch for on Monday. In the second verse of "Within the words I once called love," the band stops for a beat, and Chaehyun always looks across at Daehun when it comes, he told Esquire Korea. He asked whether the fans had ever noticed. At The Underworld, the whole room will be close enough to see.
can't be blue play The Underworld, Camden High Street, NW1, on Monday 2 November. The tour continues at Manchester's Club Academy on Tuesday 3 November.
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