When five-member Korean band can’t be blue first arrived on the scene in 2024, they debuted under UNBLUE LABELS, an agency known and celebrated for developing South Korea’s indie music scene. However, several singles and three albums into their career, can’t be blue is pushing back on being labeled as an indie band, arguing that they’ve always seen themselves as a pop band with music that combines elements of Korean rock with more pop-based rhythms and melodies. When it comes to separating K-pop from indie artists, it sometimes feels like being labelled as indie actually hinders certain acts from breaking into the mainstream industry and earning a solid fanbase. can’t be blue, on the other hand, is proving that doesn’t always have to be the case.

Debuting with "Within the Words I Once Called Love" in 2024, the five-piece band immediately found an audience – something most acts operating outside the K-pop mainstream don't typically manage. Blending alt-rock, pop, soul, and R&B, the single accumulated millions of streams largely through word of mouth, building a dedicated Korean following before the industry had fully noticed them. It later appeared as one of five tracks on their debut EP, Blue Vinyl.

In 2025, that popularity slowly spread globally, following a well-received appearance at the Golden Melody Awards in Taiwan, which helped extend their reach in wider Asian markets. That same year, the band released a string of singles – “Gonna Die,” “First Sight,” “take it anymore,” and “dim” – all of which were well-received and continued to grow can’t be blue’s popularity. Although can’t be blue was already gaining immense traction at a rate many indie artists struggle to achieve, 2026 definitely signaled another turning point in the band’s trajectory.

In just two years, the five-piece band has accumulated over 940k monthly listeners on Spotify alone, with their reach extending beyond Asia. They also released their second EP, Prussian Blue, in January, which was praised for building upon their rock-pop style while maintaining the laid-back energy that first drew listeners in. Additionally, Blue Vinyl marked the band's first K-pop collaboration, with B-side "Black Tesla" featuring SM Entertainment soloist XngHan. It brought in a new audience that arrived for XngHan and stayed for the band – exactly the kind of crossover that doesn't need engineering when the music holds up.

However, one of the band’s most notable achievements so far was being selected as a feature artist for Spotify’s 2026 “RADAR Korea” program. Through this initiative, the streaming platform highlights emerging global artists “dedicated to discovering and elevating rising K-pop and Korean music acts on the world stage.” Being selected puts can't be blue in company that is almost exclusively K-pop – previous Radar Korea honorees include BOYNEXTDOOR, BABYMONSTER, and RIIZE. For a band that resists the K-pop label entirely, the recognition carries a particular weight.

In May, the band’s visibility reached another milestone when they collaborated with Stray Kids member Han on their single, “can’t love.” Even before they had ever met, Han was already a fan of the band, recommending their music to fans on multiple occasions and even covering some of their songs. In an interview with The Korea Herald, can’t be blue vocalist Lee Dohun said, “We happened to get a chance to meet him, and I asked if he’d ever be interested in singing on one of our songs. He said yes and was willing to accommodate everything.”

Han sent the band three different versions of a melody, and they ended up weaving elements from all of them into the final track – each one strong enough that choosing just one felt like a loss. For Dohun, it reflects something fundamental about how the band has always worked. "Whether it's our sound or the way we work, we've always had the mindset of a pop band," he said. The indie label, in his view, was never theirs to begin with.

In contrast, artists who label themselves as indie – or allow others to do so – can often lead to them being pigeonholed and overlooked, stuck in a box that stifles their momentum rather than propelling it. It also can hurt an artist’s creativity if they’re unwilling to experiment and venture outside their comfort zone, which is the opposite of what can’t be blue is known for.

Currently, this mindset is shaping how can't be blue plan to move forward – including incorporating more English lyrics to broaden their reach. What they're clear about, though, is that wider appeal shouldn't come at the cost of what makes their music distinctly Korean. According to Dohun, Korean artists carry a particular sentimental quality that doesn't translate elsewhere – he compares it to the emotional depth of Korean TV dramas, something embedded in the culture rather than engineered for export. For can't be blue, that quality isn't a limitation to work around. It's the foundation everything else is built on.

On June 20, the band released its first self-titled album and took some big swings, musically and creatively. Foregoing their usual fusion of pop, rock, and R&B, can’t be blue sees the quintet add a whole new combination of genres into their repertoire, including hip-hop, K-pop, and J-pop influences. “We tried to include sounds that are difficult to find in traditional bands and make it feel more like pop music than a typical band record,” Dohun told The Korea Herald. As a result, it seems to be working in their favor, considering the release has helped them land slots at major music festivals, including Rock In Roma in Italy. 

Moving forward, can't be blue are keen to expand their roster of K-pop collaborations. Their dream team-up, they say, would be with HYBE girl group ILLIT – "We're curious ourselves about what kind of music we'd make together." For a band that has spent two years dissolving the line between indie and pop, the ambition makes sense. The question of what can't be blue sounds like with no genre ceiling at all is one worth watching.