신온유 – 첫사랑
Track 02 from Single "행복으로 키운 오렌지"
Release Date: 2021.09.29
신온유 – With You
Track 01 from Single "트레인 OST Part 2"
Release Date: 2020.08.01
전진희, 강아솔, 박현서, 신온유 – 미드나잇 선샤인
Track 02 from Single "작은평화 vol.2"
Release Date: 2021.08.10
전진희, 강아솔, 박현서, 신온유 – 여름의 마음
Track 01 from Single "작은평화 vol.2"
Release Date: 2021.08.10