Lee Chang-sub

Lee Chang-sub (; born ), is a South Korean singer and musical actor. He debuted as the lead vocalist of the South Korean boy group BtoB in March 2012. He debuted as a soloist in 2017, with the release of his debut single "At the End". The same year he made his theatre debut in the Korean musical adaptation of Boys Over Flowers as Goo Jun-pyo. He has also come to be known for his soundtrack collaborations, most prominently with the release of his cover of Can's "Heavenly Fate" in 2024. In 2023, he founded Chang-Ggo Training Centre vocal academy in Suwon.

Early life and education Lee Changsub was born in Suwon, Gyeonggi-do, South Korea.

Prior to his debut as an idol, he won a Daesang at the 16th Suwon Music Festival 2008, and became vice-president of Red Cross Youth Gyeonggi Province in 2009.

Career 2012–2017: Debut with BtoB

Lee debuted as the lead vocalist of BtoB on March 21, 2012. Although primarily a vocalist in the group, Lee has also participated in lyric writing on a few tracks by BtoB including, "Last Day", "Killing Me" and "Melody".

He was a contestant on King of Masked Singer introducing himself as "Mr. Wifi" in 2015. In 2016, he participated in the Mongolia episodes of SBS's reality-documentary show, Law of the Jungle.

2017–2022: Solo career beginnings, unit debut

Lee Changsub released his debut solo EP, bpm 82.5, in Japan. With the title track "At The End". His Japanese debut in 2017 coincided with the launch of the Piece of BTOB project, which saw each BtoB member releasing solo digital singles during the group's promotional hiatus in the summer of 2017.

He started his career in musicals in 2017. He was cast in the musical adaptation of "Boys Over Flowers" as the lead, Goo Jun-pyo. He also played a role in the Korean production of the musical "Napoleon" as Lucien, Napoleon's little brother. Next, he was cast as the titular main character in the musical "Edgar Allan Poe".

The following year, he landed another leading role as Eddie Birdlace in "Dogfight". His final musical project before military enlistment was "Iron Mask" where he undertook the dual leading role of King Louis XIV as well as his twin brother Philippe

In December 2018, he released his first Korean solo EP titled Mark. He considered it a gift to his fans before his enlistment in January 2019. He held his first solo concert, SPACE, on January 4, 5 and 6, 2019 at the Yes24 Live Hall in Gwangjin District, Seoul.

On October 27, 2020, Cube announced that the currently active members of BtoB would form a unit called BtoB 4U consisting of Eunkwang, Minhyuk, Changsub and Peniel. The unit debuted on November 16 with their first mini-album, Inside and title track "Show Your Love".

On September 6, 2022, he released his solo single titled "reissue #001 'SURRENDER".

2023–present: Departure from Cube Entertainment, solo success In April 2023, he established Chang-Ggo Training Centre vocal academy in Suwon. In November 2023, BtoB members departed from Cube Entertainment following the end of their contracts. On November 23, 2023, it was announced that Lee had signed with Fantagio. Lee has stated his plans to continue BtoB group promotions despite being under a different agency to his members.

On February 21, 2024, Lee released a cover of Can's "Heavenly Fate" as an OST single for the webtoon, A Not So Fairy Tale. The single was one of the most successful singles of 2024, dominating karaoke and streaming charts, and went on to secure nominations for MAMA and the Melon Music Awards. Lee commenced his solo concert tour, The Wayfarer Tour, on November 30–December 1 in Seoul at the KBS Arena.

Lee released his debut essay, A Suitable Person, on February 25, 2025, topping the Korean bestseller lists.

Personal life Health Lee developed vocal cord nodules around the time of the recording of Mark, in late 2018. In March 2024, Lee halted activities that involved singing due to his "poor throat condition". Lee later revealed that he was diagnosed with vocal cord polyps, and had had three surgeries to correct it.

Military service He began his military duty by enlisting as an active duty soldier on January 14, 2019. On July 24, Lee recorded a special single— a new theme song for the ROK Army alongside Shinee's Onew and Key, Exo's Xiumin, Infinite's Sungkyu, 2AM's Jo Kwon and Jinwoon, Yoon Ji-sung and actors Kim Minseok, and Lee Jae-kyoon.

He was officially discharged on August 21, 2020, following the COVID-19 protocol.

Philanthropy On October 21, 2017, Lee Chang-sub visited his alma mater and delivered a scholarship of ₩10 million to his high school alma-mater, Samil Commercial High School. Changsub said, "I couldn't have imagined this when I was in school. It's an honor to be in a situation where I'm able to deliver this scholarship for the younger generation of students. I've been able to come this far thanks to my teachers and my school who helped me until the end when I was a student".

Discography

Studio albums Title Details Peak chart positions Sales KOR 1991 Released: October 2, 2024 Label: Fantagio, Kakao M Format: CD, digital download 7 KOR: 47,762

Extended plays Title Details Peak chart positions Sales KOR JPN bpm82.5 Released: June 7, 2017 Label: Kiss Entertainment Format: CD, digital download — 12 JPN: 7,141 Mark Released: December 11, 2018 Label: CUBE Entertainment, Kakao M Format: CD, digital download 5 — KOR: 47,433 EndAnd Released: October 22, 2025 Label: Fantagio, Kakao M Format: CD, digital download 10 — KOR: 54,529 "—" denotes a recording that did not chart or was not released in that territory

Single albums + List of single albums, with selected chart positions and sales Title Details Peak chart positions Sales KOR Vroom Vroom Released: July 7, 2025 Label: Fantagio, Kakao M Formats: QR, digital download 16 KOR: 28,781

Singles As lead artist + List of singles as lead artist, showing year released, with selected chart positions, sales and album name Title Year Peak chart positions Sales Album KOR "You Inside My Memories" 2015 — "At the End" 2017 22 KOR: 95,666 Piece of BTOB Vol. 1 "Gone" 2018 74 Mark "I Guess I Loved You" 2023 184 "As Always" 2024 193 "Vain Hope" — 1991 "33" 177 "Old Town" — "Feel the Groove" 2025 — "Coward" – "I Will Be Your Flower" 137 "Vroom Vroom" — Vroom Vroom "That Place, That Time" 131 "EndAnd" — EndAnd "Trickle Down" 120 "Love Again" 2026 190 "—" denotes a recording that did not chart or was not released in that territory

As featured artist + List of singles as featured artist, showing year released and album name Title Year Album "Last Taxi" 2025 Love Virus Pt.1

Collaborations

Soundtrack appearances + List of soundtracks, showing year released, with selected chart positions, sales and album name Title Year Peak chart positions Sales Album KOR "Be Alright" 2012 93 KOR: 37,281 Road for Hope OST "Bye Bye Love" 2013 35 KOR: 133,418 When a Man Falls in Love OST "Past Days" 56 KOR: 87,730 Monstar OST "After Time Passes" 32 KOR: 125,359 "First Love" 61

Songwriting credits All credits are adapted from the Korea Music Copyright Association, unless cited otherwise. Year Song Artist(s) Album Lyricist Composer 2014 "Never Ending (Melody)" ) BTOB Beep Beep 2015 "Last Day" I Mean 2016 "Killing Me" Remember That "Melody Song" New Men 2017 "At The End" Himself Piece of BTOB Vol. 1 2018 "Way" Mark "Miss You" (틈) "Shelter" "Ever" "Gone" 2024 "As Always" 1991 "33"

Filmography

Television series Year Title Role Notes 2013 Monstar Men in Black member 2015 The Village: Achiara's Secret Cameo

Television shows Year Title Role Notes 2015 King of Masked Singer Contestant as Mr. Wifi National Idol Singing Competition with Seo Eun-kwang as Golden and Silver Axe 2016 Idol and Family National Singing Competition with Seo Eun-kwang and his brother Law of the Jungle in Mongolia Cast member Episode 229–237 2017 Duet Song Festival Contestant Episode 43–44 (with Park Soo-jin) 2020 Bookae Contest with Seo Eun-kwang as Golden and Silver Axe 2024 Universe League Director Team Groove

Hosting Year Title Notes 2019 Korean Armed Forces Symphony Orchestra the Peacekeeper of Gang-Won with Shinee's Key 2020 All That Cube Episode 7–16 2024 When I Opened My Eyes with Cho Sae-ho 2025 Salon de Idol with Key Idol Star Athletics Championships (ISAC) with Jun Hyun Moo, Lee Eun Ji, and Jonathan

Web shows Year Title Role Notes 2022–2025 Jeongwaja (Changing Majors) Host Season 1–5 2022 Inssa Oppa S7 with Seo Eun-kwang 2023 Lotri Night 2025 Singing for You Director 2025–2026 Ttorora Cast with Solar and Hyungwon

Live performances and tours

Musical stages Year Title Role 2017 Boys Over Flowers Tsukasa Doumyouji Edgar Allan Poe Edgar Allan Poe 2018 Dogfight Birdlace Iron Mask Louis XIV 2021 The Last Empress Hong Gye-Hoon Marie Antoinette Count Axel von Fersen Darwin Young's Origin of Evil Darwin Young 2022 Mata Hari Armand 2023 Memphis Huey 2023–2024 Winter Traveler Han Min-woo 2025 Memphis Huey

Solo concerts

Special concerts Year Date Title Venue 2021 Sept 24 Museezn Concert 2021 Lotte Concert Hall 2024 July 25–26 2024 LOTTE OST Festival

Awards and nominations

+ Name of the award ceremony, year presented, award category, nominee(s) of the award, and the result of the nomination Award ceremony Year Category Nominee / Work Result Brand of the Year Awards 2023 Web Entertainment MC Himself Korea First Brand Awards 2025 Male Vocal Web Variety MC 2026 Men's Vocal Category MAMA Awards 2024 Song of the Year "Heavenly Fate" Best OST Melon Music Awards 2024 Song of the Year Best Male Solo Himself