Learn about SEONGHYEON of CORTIS, including his birthday, music credits, creative contributions, style, debut and latest activities.
SEONGHYEON Profile & Facts
| Fact | Details |
|---|---|
| Stage Name | SEONGHYEON |
| Group | CORTIS |
| Birthday | January 13, 2009 |
| Agency | BIGHIT MUSIC |
| Debut | 2025 |
| Group | CORTIS |
| Fandom | COER |
SEONGHYEON is a member of CORTIS, BIGHIT MUSIC’s five-member boy group. He was born on January 13, 2009, and is one of the younger members of the group.
CORTIS officially debuted in 2025 and is built around a collaborative creative process in which all five members participate in music, choreography, videos and other aspects of the group’s work.
Who Is SEONGHYEON?
SEONGHYEON is a member of CORTIS known for contributing ideas to the group’s music and creative direction.
Rather than having rigidly separated creative positions, CORTIS works as a team. SEONGHYEON has described his approach as drawing inspiration from everyday experiences and the music he listens to.
He has also contributed ideas to CORTIS songs, including lyrics and creative concepts.
SEONGHYEON’s Early Life
SEONGHYEON was born on January 13, 2009.
According to his Weverse Magazine debut interview, his interest in becoming an entertainer began years before his official debut. He described deciding to pursue the dream after an experience at an amusement park on his birthday in 2018.
He eventually became a trainee and continued preparing for his debut with BIGHIT MUSIC.
SEONGHYEON’s Debut With CORTIS
SEONGHYEON debuted as a member of CORTIS in 2025.
CORTIS introduced its first music with “What You Want” before releasing its first EP, COLOR OUTSIDE THE LINES.
The group officially debuted with five members: MARTIN, JAMES, JUHOON, SEONGHYEON and KEONHO.
SEONGHYEON’s Role in CORTIS
CORTIS does not use a rigid system of fixed creative positions for its members.
Instead, the members participate in songwriting, composition, choreography, music videos and other creative work.
SEONGHYEON contributes ideas based on his own musical interests and experiences.
MARTIN has described SEONGHYEON as someone who gives direct creative suggestions and stays true to his own style.
SEONGHYEON’s Music Career
SEONGHYEON’s music career began with CORTIS.
He has participated in the group’s debut-era creative work and has continued contributing ideas to later releases.
His musical influences are broad, and he has said that he listens to different genres and draws inspiration from everyday life.
SEONGHYEON’s Music Credits
SEONGHYEON is credited on CORTIS’ debut EP, COLOR OUTSIDE THE LINES.
He is among the members credited on “FaSHioN.”
All five CORTIS members also participated in the lyrics and composition of “JoyRide.”
SEONGHYEON additionally contributed to “Lullaby,” which was produced with MARTIN at the lead.
SEONGHYEON and “FaSHioN”
SEONGHYEON contributed ideas to “FaSHioN,” a song centered around fashion and the members’ everyday experiences.
He explained that the references to Hongdae and Dongmyo were connected to his own experiences shopping for clothes during his trainee years.
He specifically contributed the ideas behind lines referencing Hongdae and Dongmyo.
SEONGHYEON and “JoyRide”
SEONGHYEON participated in the creative development of “JoyRide.”
The song combines alternative rock elements with pop and focuses on the feeling of escaping everyday routines.
SEONGHYEON described the track as something to listen to when going for a drive or wanting to get away for a while.
SEONGHYEON and “Lullaby”
SEONGHYEON also contributed to “Lullaby” from CORTIS’ debut EP.
The song explores uncertainty, pressure and the comfort of relying on one another.
BIGHIT MUSIC identifies MARTIN as leading the production, with JAMES and SEONGHYEON also contributing to the track.
SEONGHYEON’s Creative Style
SEONGHYEON has said that his main source of musical inspiration is real-life experience and everyday life.
He also listens to a wide variety of genres and has experimented with different musical influences while developing his own creative style.
His approach within CORTIS is based on contributing his own ideas rather than simply following a predetermined style.
SEONGHYEON’s Fashion Style
Fashion is an important part of CORTIS’ identity, and SEONGHYEON has developed his own preferences.
Weverse Magazine has described the members as having distinct personal styles rather than dressing identically.
SEONGHYEON has discussed his interest in clothing and vintage accessories, including experiences shopping in Dongmyo and Hongdae.
SEONGHYEON’s CORTIS Activities
Since debuting, SEONGHYEON has participated in CORTIS’ music releases, performances, music videos, interviews and promotional activities.
He has also taken part in the group’s live performances and international activities.
SEONGHYEON’s Current Activities
SEONGHYEON continues to promote as a member of CORTIS.
His recent activities include CORTIS’ 2026 releases, performances, promotional schedules and group activities surrounding GREENGREEN_playextended.
SEONGHYEON Quick Facts
- Stage name: SEONGHYEON
- Group: CORTIS
- Birthday: January 13, 2009
- Agency: BIGHIT MUSIC
- Debut: 2025
- Fandom: COER
- Participated in CORTIS’ songwriting and creative work
- Credited on “FaSHioN”
- Participated in “JoyRide”
- Contributed to “Lullaby”
- Interested in music, fashion and creative work
SEONGHYEON FAQ
When is SEONGHYEON’s birthday?
SEONGHYEON was born on January 13, 2009.
What group is SEONGHYEON in?
SEONGHYEON is a member of CORTIS under BIGHIT MUSIC.
When did SEONGHYEON debut?
SEONGHYEON debuted with CORTIS in 2025.
Is SEONGHYEON involved in CORTIS’ music?
Yes. SEONGHYEON participates in CORTIS’ collaborative creative process and has credits and contributions across the group’s music.
What songs has SEONGHYEON contributed to?
His documented CORTIS contributions include “FaSHioN,” “JoyRide” and “Lullaby,” among other group creative work.
