Changbin

Seo Chang-bin (; born August 11, 1999), known mononymously as Changbin, is a South Korean rapper, singer, songwriter, and record producer. He is a member of the South Korean boy group Stray Kids, formed by JYP Entertainment in 2017. He is also a member of 3Racha, an in-house production team and sub-unit of Stray Kids.

Besides his contributions to Stray Kids, Changbin participated as a contestant in Show Me the Money 9 and has collaborated with various artists, including Yoon Ji-sung, Thai rappers F.Hero and Milli. Changbin became a full member of the Korea Music Copyright Association in February 2023.

Early life and education Seo Chang-bin was born on August 11, 1999, in Yongin, South Korea. He graduated from and studied at Gukje Cyber University in the Department of Entertainment.

Career Pre-debut: 3Racha and Stray Kids reality

Changbin joined JYP Entertainment through an audition where he danced to a self-produced song. During his trainee period, Changbin teamed up with fellow JYP trainees Bang Chan and Han to form the underground rap group 3Racha, releasing multiple mixtapes under the pseudonym SpearB, without the company's knowledge. They uploaded their first mixtape, J:/2017/mixtape, consisting of seven tracks, to SoundCloud.

In 2017, Changbin participated in JYP's survival show Stray Kids and was confirmed to debut with eight other contestants. Throughout the show, he demonstrated his rapping and music composition skills, with several of his written songs included in the pre-debut EP Mixtape.

2018-present: Stray Kids and collaborations

Changbin officially debuted with Stray Kids through a debut showcase and the EP I Am Not on March 25, 2018. He participated in the composing and writing for the songs in the EP.

In February 2019, Changbin featured on "You... Like the Wind", a side track from Yoon Ji-sung's debut album. In 2020, Changbin participated as a contestant in Show Me the Money 9. He passed the 1st Round but eliminated in the 60 Seconds Team Trial. which featured in an advertisement of Samsung Galaxy three years later.

On October 28, 2021, Changbin featured on the song "Mirror Mirror" by Thai rappers F.Hero and Milli. The song won Best Collaboration awards from Thailand's Toty Music Awards and The Guitar Mag Awards. and, as of August 2026, has credits for 207 songs, the sixth most among K-pop idols.

On October 15, 2024, Changbin was featured on the song "VAY" from Itzy's ninth EP Gold, for which he also wrote the lyrics and composed the music. In September 2025, he featured on "R&B Me" by Jun. K from the EP Dear My Muse.

Other ventures Fashion In May 2024, he made his Met Gala debut with Stray Kids as the guest of Tommy Hilfiger. On February 26, 2026, footwear brand Autry announced Changbin as its inaugural brand ambassador.

Philanthropy On February 16, 2023, Changbin donated through the international relief organization The Promise to aid the relief efforts following the earthquake in Turkey and Syria. His contributions led to his appointment as a member of the Honors Club on March 30.

Changbin donated another to Samsung Medical Center on August 11, 2025 to celebrate his 26th birthday. The donation he made will be used to cover the treatment costs of children and adolescent patients receiving treatment at Samsung Medical Center, as well as emotional support activities to help them achieve psychological stability.

On August 11, 2026, Changbin donated ₩100 million again to Samsung Medical Center in celebration of his 27th birthday, with the donation allocated to treatment costs for pediatric and adolescent patients and emotional support programs for their families.

Endorsements On September 1, 2023, Changbin released a single titled "Fly High" for the promotion of Samsung Galaxy Z Flip 5. On February 5, 2024, he featured in the release of another promotional single, Kim Chang-wan's "8th Grader (Respect Your Dreams)", for Samsung Galaxy S24.

Discography

Songs

As lead artist + List of songs, showing year released, selected chart positions, and name of the album Title Year Peak chart positions Album KORDL NZHot UKSales USWorld "We Go" 2020 — — — 10 In Life "Surfin'"2021 29 — — — Noeasy "Piece of a Puzzle" — — — — SKZ-Replay "Doodle" 2022 — — — — "Streetlight" — — — — "Up All Night" — — — — "Zone" — — — — "Because" — — — — "Muddy Water" 26 — — — Oddinary "3Racha" 36 24 — 13 Maxident "Heyday" 118 — — 13 Street Man Fighter Original Vol.4 Crew Songs "Snain" 2023 — — — — "Ultra" 2024 31 — — — Hop "Burnin' Tires" 2025 160 36 41 3 Mixtape: Dominate "My Name" 2026 — — — — SKZ-Replay 2026 Pt.1 "—" denotes releases that did not chart or were not released in that region.

As featured artist + List of songs, showing year released, selected chart positions, and name of the album Title Year Peak chart positions Album KOR HUN JPNCmb. JPNHot USWorld — — — — Gold "R&B Me" 2025 — — — — — Dear My Muse "—" denotes releases that did not chart or were not released in that region.

Promotional singles + List of promotional singles, showing year released, and selected chart positions Title Year Album KOR "Fly High" 2023 — "8th Grader (Respect Your Dreams)" 2024 — "—" denotes releases that did not chart or were not released in that region.

Videography

Music videos + List of music videos, showing year released, artist and name of the album Title Year Artist(s) Album Ref. "Ultra" 2024 Changbin Hop

Filmography

+ Year Title Role Notes 2017 Stray Kids Contestant Debuted with Stray Kids 2020 King of Mask Singer Contestant As "Private Second Class" in Episode 261 Show Me the Money 9 Contestant Eliminated in 60 Second Team Trials

Awards and nominations

+ Award ceremony Year Category Nominee / work(s) Result Toty Music Awards 2021 Popular Collaboration/Collaboration Artist Songs "Mirror Mirror" The Guitar Mag Awards 2022 Best Collaboration of the Year