Kim Ja-yeon, who performs as Jayeon, built her recording career as the main vocalist of 1NB (원앤비), a South Korean girl group, and later as a vocalist in the Die.A Project collective.
Group work & roles
Within 1NB, Jayeon held the main vocalist position — the member designated as the group's primary singing voice. She subsequently participated in Die.A Project in a vocalist capacity. Both memberships are now concluded.
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*No further verified detail — chart performance, discography, debut dates, disbandment timeline, or solo activity — is available in the sourced material. This profile will be updated as additional information is confirmed.*
