Ko Yujin

- A Slow Child
- Newborn Baby · 2004
- Just One Person
- Famous Seven Princesses (Original Television Soundtrack) · 2006
- My own grief
- 2024 My Own Grief - Single · 2024
- Star
- Newborn Baby · 2004
- Sunday Kiss
- My Romantic Life · 2005
- She's Crying
- My Romantic Life · 2005
- Just One More Day
- Newborn Baby · 2004
- Dance Tonight
- Newborn Baby · 2004
- My own grief (Instrumental)
- 2024 My Own Grief - Single · 2024
- Confession (Instrumental)
- Refresh project - Single · 2024

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