The Pulse of K-Entertainment

Semi
ArtistOddinary Records

Semi

Semi (세미), born Goo Se-mi (구세미) on April 10, 2002, is a South Korean singer, bassist, and performer whose career has quietly covered more ground than her current band role might suggest at first glance. She first entered the idol system through Cignature, debuting on February 4, 2020 with "Nun Nu Nan Na" after being introduced as part of C9 Entertainment's next girl group in late 2019. Across Cignature's run, she held a classic multi-use idol position as vocalist, dancer, and maknae, moving through the group's early singles and EP cycle until its December 2024 disbandment.

LATENCY changed the frame around her. Instead of returning in another idol configuration, Semi joined LATENCY under Oddinary Records and took on bass, a role that pushed her further into a player-led setup and away from the usual girl-group expectations. That shift made her one of the most interesting members in the lineup because it asked fans to reassess her, not just follow her into a new logo.

The timing helped. LATENCY spent late 2025 building its identity through the web series Motchuh Do Rock!, then officially debuted on January 8, 2026 with "It Was Love." The group's first mini album LATE O'CLOCK arrived on March 18, 2026 and gave Semi a stronger platform to show how cleanly she could move from idol performance into a real band dynamic. Her value inside the group is not nostalgia for Cignature. It is the fact that she made the transition feel believable.

LATENCY
Member of LATENCY
Cignature
Member of Cignature
1 articles7 creditsDebut: February 4, 2020South Korean

Gallery

LATENCY group photo, March 18 2026 (CC BY 4.0 via Wikimedia Commons)

Discography

2026
It Was LoveSingle
BassistLATENCYOddinary Records
2026
LATE O' CLOCKMini Album
BassistLATENCYOddinary Records
2024
Sweetie but SaltieMini Album
MemberCignatureC9 Entertainment
2023
My Little AuroraMini Album
MemberCignatureC9 Entertainment
2023
Us in the SummerMini Album
MemberCignatureC9 Entertainment
2022
PLAYERMini Album
MemberCignatureC9 Entertainment
2020
Nun Nu Nan NaSingle
MemberCignatureC9 Entertainment

Fans Also Ask

Who is Semi from LATENCY?
Semi is the bassist and maknae of LATENCY. Born Goo Se-mi on April 10, 2002, she first became known as a member of <a href="/artists/cignature">Cignature</a> before re-entering the market through Oddinary Records' band project and debuting with LATENCY on January 8, 2026.
Was Semi a member of Cignature?
Yes. Semi debuted with <a href="/artists/cignature">Cignature</a> on February 4, 2020 with "Nun Nu Nan Na" and stayed with the group through its EP run until the team disbanded in December 2024. LATENCY became her first major post-Cignature project after that chapter closed.
What does Semi do in LATENCY?
Semi plays bass in LATENCY, which is a meaningful shift from the vocalist and dancer positioning she held in her idol-group years. That move helped define LATENCY as a real band project rather than a simple rebrand, especially across "It Was Love" and the mini album <em>LATE O'CLOCK</em>.
When did Semi debut with LATENCY?
Semi debuted with LATENCY on January 8, 2026 through the digital single "It Was Love." The band followed that release with its first mini album <em>LATE O'CLOCK</em> on March 18, 2026, establishing the group's live-first sound under Oddinary Records.
Why is Semi's move to LATENCY notable?
Semi's shift from idol-group activity into a bassist role gave her career a more musician-led direction after Cignature ended. Rather than repeating the same format, she stepped into a band that asked her to build a different kind of presence, which made the transition feel like an actual artistic reset.

Latest Articles

LATENCY Members
Music6 min read

LATENCY Arrives: Former LOONA and Cignature Members Debut "LATE O' CLOCK"

LATENCY drops their debut mini album LATE O' CLOCK today, featuring former LOONA, Loossemble, and Cignature members who left the idol system to form a real band.

PakMarch 18, 2026
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