서정 (Seojeong) – 별이될게(I’ll be a star)
Track 01 from Single "별이 될게"
Release Date: 2021.10.22
서정 (Seojeong) – 헤어지기 싫어
Track 01 from Single "헤어지기 싫어"
Release Date: 2021.10.08
서정 (Seojeong) – 너무 늦게 오지마(Don’t be too late.) (Feat. 유인아)
Track 01 from Single "너무 늦게 오지마"
Release Date: 2021.12.06
서정 (Seojeong) – 하지 못한 말
Track 01 from Single "하지 못한 말"
Release Date: 2021.02.05