[K-pop Lineage] EP.02 | BTS × TXT × CORTIS: How Big Hit Music Built a 12-Year Boy Group Lineage

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[K-pop Lineage] EP.02 | BTS × TXT × CORTIS: How Big Hit Music Built a 12-Year Boy Group Lineage

Inside Big Hit Music's family: BTS in 2013, TXT in 2019, CORTIS in 2025. Six years apart, every time. The label's three-generation boy group lineage broken down, from BTS ARIRANG topping Billboard 200 for three weeks to CORTIS preparing GreenGreen.

SOOJIB Editorial [K-pop Lineage] EP.02
K-pop Lineage · EP.02

One label, three boy groups: Big Hit Music's twelve-year lineage

BTS, TXT, CORTIS. Six years apart, every time. And in spring 2026, the senior two are sitting next to each other in the Billboard 200 Top 5.

BTS ARIRANG 2026 album cover TXT 7th Year A Moment of Stillness in the Thorns 2026 album cover CORTIS GreenGreen 2026 EP cover
BTS ARIRANG (March), TXT 7th Year (April), CORTIS GreenGreen (May). Three Big Hit Music boy group comebacks in one spring

About this episode

EP.01 looked at KQ Entertainment's two boy groups, ATEEZ and xikers, the most classic version of a sibling group setup. EP.02 raises the stakes a bit. Big Hit Music isn't running two boy groups. It's running three.

BTS in 2013, TXT in 2019, CORTIS in 2025. Six years between each debut, every time. And right now, in spring 2026, BTS and TXT are sitting next to each other in the Billboard 200 Top 5 with brand new albums, while CORTIS prepares to drop their second EP GreenGreen. Three generations of one label, all in active promo cycles in the same season. There isn't another K-pop label in history that can say that.

01The six-year pattern

If you line up Big Hit Music's boy group debuts, the rhythm is almost suspicious. BTS arrived in June 2013. Six years later, in March 2019, TXT debuted, and right after their first comeback the seniors visited the rookies on camera. Six more years after that, in August 2025, CORTIS arrived. The gaps aren't accidental. They're the closest thing K-pop has to a generational handover, mapped out by one label across more than a decade.

BTS visiting TXT during their debut promotions, June 2019. The moment Big Hit's first generation officially welcomed the second

What makes the pattern interesting is what each generation actually did with its window. BTS didn't just chart. They became the most globally recognised K-pop group of all time and topped the Billboard 200 seven times. TXT debuted into a label that already had global infrastructure, and used it to land their own number one in 2023 with The Name Chapter: Temptation. CORTIS, the youngest of the three, debuted at number 15 on the Billboard 200 with their first EP. That's the second-highest entry ever for a K-pop group's debut album.


TXT's The Name Chapter: Temptation, the album that made them the fifth K-pop act ever to top the Billboard 200
1st Generation · 2013

BTS

7 members · ARMY
  • Debut13 June 2013
  • MembersRM, Jin, Suga, J-Hope, Jimin, V, Jung Kook
  • LatestARIRANG (10th studio, March 2026)
  • Billboard 200 #1s7 albums
2nd Generation · 2019

TXT

5 members · MOA
  • Debut4 March 2019
  • MembersYeonjun, Soobin, Beomgyu, Taehyun, Hueningkai
  • Latest7th Year: A Moment of Stillness in the Thorns (April 2026)
  • Billboard 200 #1s1 album (2023)
3rd Generation · 2025

CORTIS

5 members · COER
  • Debut18 August 2025
  • MembersMartin, James, Juhoon, Seonghyeon, Keonho
  • Debut albumColor Outside the Lines (#15 BB200)
  • Average age at debut17

02Martin was already part of the family

Most rookie K-pop boy groups arrive with their members as fresh faces. CORTIS arrived with their leader already credited on songs by four of HYBE's biggest acts. Martin, who turned 17 the year CORTIS debuted, had quietly been writing and producing inside the HYBE ecosystem since 2024. By the time he was officially announced as a CORTIS member in July 2025, his name was already on TXT's Deja Vu and Miracle, ILLIT's Magnetic, LE SSERAFIM's Pierrot, and ENHYPEN's Outside.

Martin, CORTIS's Korean-Canadian leader, who was credited on TXT and ILLIT songs before he ever performed as an idol himself

James, the oldest CORTIS member, has a similar back catalogue. He's credited on TXT's Deja Vu and Miracle alongside Martin, and on ILLIT's Magnetic. He danced as a backup for Jung Kook's Seven live performances. So when CORTIS arrived under Big Hit Music in August 2025, two of their five members were already inside the family tree. They didn't have to introduce themselves to the HYBE ecosystem. The ecosystem had been building them for years.

The lineage between BTS and TXT is mostly chronological. The lineage between TXT and CORTIS is literal. Martin and James helped write some of TXT's most-streamed tracks before they ever stood on a stage themselves.

03The Mic Drop cover, on purpose

In December 2025, four months into their career, CORTIS performed a cover of BTS's Mic Drop at KBS's Music Bank Global Festival in Japan. It's the kind of move that, on paper, looks like just another rookie tribute. In context, it's bigger. Mic Drop is one of the songs that helped break BTS into the American market a decade earlier. Choosing it as a cover wasn't about copying. It was a younger generation acknowledging exactly which doors had been opened for them, and by whom.

CORTIS covering BTS's Mic Drop at the Music Bank Global Festival in Japan, December 2025

By the time the cover happened, CORTIS already had their own credentials lined up. Color Outside the Lines had debuted at number 15 on the Billboard 200, the second-highest entry for a K-pop debut album in history. They'd swept the rookie awards at MAMA, the Asia Artist Awards, and the Golden Disc Awards. They'd just been announced as the first Korean boy group to perform at an NBA All-Star Game. The Mic Drop cover wasn't a rookie group reaching upward. It was a rookie group reaching back to mark the line.

04BTS and TXT, Top 5 in the same week

The reason this episode exists right now, specifically, is that something extremely rare is happening on the US chart. BTS released ARIRANG in March 2026, their first studio album as a full group in nearly six years. It debuted at number one on the Billboard 200 with 641,000 album-equivalent units in its first week, the largest opening week by any group since the chart began calculating units in 2014. It then held the top spot for three consecutive weeks, the first album from a group to do that since Mumford & Sons in 2012.

BTS's Swim, the lead single from ARIRANG. The first K-pop MV of 2026 to hit 100 million views, in 26 days

While ARIRANG was still in the Top 10, TXT released 7th Year: A Moment of Stillness in the Thorns and debuted at number 3, their eighth Top 10 entry on the Billboard 200. The album also opened at number 1 on Billboard's Top Album Sales chart, making TXT the first K-pop artist ever to score nine number ones on that chart. For one week in late April 2026, TXT held number 3 and BTS held number 4 on the same Billboard 200. Two Big Hit Music groups, sitting next to each other in the Top 5. CORTIS, with their second EP GreenGreen arriving on 4 May, is on track to be the next Big Hit Music boy group on the chart.

Billboard 200, late April 2026

#3
TXT
7th Year
debut · 8th Top 10
#4
BTS
ARIRANG
4th week on chart

Big Hit Music boy group timeline

2013.06BTS debut with 2 Cool 4 Skool
2018.05BTS become the first K-pop group to top the Billboard 200 (Love Yourself: Tear)
2019.03TXT debut with The Dream Chapter: Star
2023.02TXT top the Billboard 200 with The Name Chapter: Temptation
2024–25Martin and James write and produce for TXT, ILLIT, LE SSERAFIM, ENHYPEN
2025.08CORTIS debut with What You Want
2025.09CORTIS Color Outside the Lines debuts at #15 on the Billboard 200
2025.12CORTIS perform Mic Drop at Music Bank Global Festival in Japan
2026.03BTS return with ARIRANG, debut at #1 with the largest opening week for a group since 2014
2026.04TXT debut at #3 on the Billboard 200 with their 8th Top 10 entry
2026.05CORTIS release their second EP GreenGreen

05Why this lineup is unusual

K-pop labels run multiple groups all the time. What makes Big Hit Music different is the deliberateness of the spacing. SM Entertainment ran NCT and aespa concurrently, expanding sideways. JYP launched Stray Kids and ITZY in roughly the same window. HYBE's other sub-labels (BELIFT LAB, KOZ, Source Music) each operate one group at a time. Big Hit Music is the only K-pop label that has taken six full years between every flagship boy group launch and let each generation breathe before introducing the next.

BTS and TXT together at a Big Hit family group photoshoot, 2020. The kind of family portrait most labels never get to take

The pattern feels old-fashioned in the best way. BTS got to dominate the conversation for the entire 2010s before TXT was even introduced. TXT got six years to build their own identity, fanbase, and Billboard history before CORTIS arrived. CORTIS, in turn, isn't being treated as a junior side project. They debuted with a Republic Records deal in the US, an NBA All-Star booking, and a Billboard 200 chart entry their senior labelmates would have killed for at the same career stage.


5인 시상식 단체컷 (2025 MAMA / AAA / Golden Disc 4관왕)
CORTIS swept the major rookie awards in their debut year. MAMA, the Asia Artist Awards, and the Golden Disc Awards

06What the next year looks like

BTS just opened the ARIRANG World Tour with their first US show in four years, an invite-only Spotify event at Pier 17 in New York where they performed three new tracks for a thousand fans in the cold. TXT's Stick With You from 7th Year has been picking up music show wins, with their comeback showcase performance still circulating online. CORTIS's RedRed dropped on 20 April as the pre-release for GreenGreen, hit number one on YouTube's Trending Worldwide chart the next day, and started running through the Korean music shows that same week. For the first time in K-pop history, three generations of one label's boy groups are all in active promo cycles in the same six-month window.

BTS2.0 · Pier 17, NYC
TXTStick With You · Showcase
CORTISRedRed · Music Core
Three generations, one season. BTS at Pier 17 with Spotify, TXT at their comeback showcase, CORTIS on Music Core

If KQ's two boy groups in EP.01 felt like a label drawing one line on purpose, Big Hit Music's three generations feel like a label drawing the same line three times. ARMY checks on MOA, MOA chats up COER, and somewhere in there, a Mic Drop cover does a lot of quiet work. It's been twelve years since 2 Cool 4 Skool. The line is still being drawn.

Shop the Lineage
Find BTS, TXT and CORTIS at SOOJIB
Next Episode

EP.03 · HYBE went techno: how three girl groups landed on the same sound in three weeks

LE SSERAFIM, ILLIT, KATSEYE. Different labels, one parent company, three comebacks in twenty-one days. Parallel lineage gets its own chapter next.

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