Ko Yujin

- A Slow Child
- Newborn Baby · 2004
- Just One Person
- Famous Seven Princesses (Original Television Soundtrack) · 2006
- Everyday
- My Romantic Life · 2005
- A slow child (2023) [My love]
- A slow child (2023) [My love] - Single · 2023
- 소원 WISH
- 소원 WISH - Single · 2014
- How can you do that (feat. Ko Yujin) (New Ver.)
- Last Romanticist · 2008
- Together (2023)
- Together (2023) - Single · 2023
- My own grief (Instrumental)
- 2024 My Own Grief - Single · 2024
- My own grief
- 2024 My Own Grief - Single · 2024
- Confession (Instrumental)
- Refresh project - Single · 2024
- Confession
- Refresh project - Single · 2024
- Together (2023) [Instrumental]
- Together (2023) - Single · 2023
- O Holy Night (feat. 고유진, 김신의, Mose, 김동명, Yang Zi, 김시원, 건예 & Sean Song)
- O Holy Night - Single · 2023

2024 My Own Grief - Single

2024 My Own Grief - Single

2024
Refresh project - Single

Refresh project - Single

2024
Together (2023) - Single

Together (2023) - Single

2023
Just One Person (Our Secret Diary) - Single

Just One Person (Our Secret Diary) - Single

2023
Please - Single

Please - Single

2023
A slow child (2023) [My love] - Single

A slow child (2023) [My love] - Single

2023
Friends Vol.5 - Single

Friends Vol.5 - Single

2022