고훈정 – 흩어진 바람
Track 01 from Single "흩어진 바람"
Release Date: 2018.05.04
고훈정 – 푸른 닻
Track 01 from Single "푸른 닻"
Release Date: 2018.05.31
고훈정 – 비련
Track 01 from EP "팬텀싱어 올스타전 Episode.4"
Release Date: 2021.02.17
고훈정, 권서경 – Miserere
Track 06 from EP "팬텀싱어 올스타전 Episode.6"
Release Date: 2021.03.03