Hyoan (효안) – Died away
Track 01 from Single "Died away"
Release Date: 2020.01.07
Hyoan (효안) – IF U LEAVE
Track 02 from Single "방 안에 누워 우주를 보면서"
Release Date: 2021.05.06
Hyoan (효안) – 여전해 (same old, same old)
Track 01 from Single "방 안에 누워 우주를 보면서"
Release Date: 2021.05.06
Hyoan (효안) – CICADA (Piano Ver.)
Track 02 from Single "CICADA"
Release Date: 2020.04.02
Hyoan (효안) – Every night you run away from me
Track 01 from Single "Every night you run away from me"
Release Date: 2021.03.03
Hyoan (효안) – CICADA
Track 01 from Single "CICADA"
Release Date: 2020.04.02
Hyoan (효안) – Lost(Feat. 도경)
Track 03 from Single "Noctilúca"
Release Date: 2019.06.07
Hyoan (효안) – Noctilúca
Track 02 from Single "Noctilúca"
Release Date: 2019.06.07
Hyoan (효안) – 가고일 (Gargoyle)
Track 01 from Single "가고일 (Gargoyle)"
Release Date: 2020.09.03
Hyoan (효안) – 코스모스
Track 01 from Single "Noctilúca"
Release Date: 2019.06.07
ChanJu, Hyoan (효안) – Remain
Track 01 from Single "Remain"
Release Date: 2021.01.31