Kassy

- Aching
- Alchemy of Souls, Pt. 2 (Original Television Soundtrack) - Single · 2022
- Greeting
- Chocolate (Original Television Soundtrack) · 2019
- Good Morning
- KBS2 Drama Fight For My Way (Original Soundtrack), Pt.2 - Single · 2017
- The Late Regret (Instrumental)
- The Late Regret - Single · 2026
- The Late Regret
- The Late Regret - Single · 2026
- Back to you again (Instrumental)
- Undercover Miss Hong (Original Soundtrack) Pt. 5 - Single · 2026
- Back to you again
- Undercover Miss Hong (Original Soundtrack) Pt. 5 - Single · 2026
- A Love Just For You
- A Love Just For You - Single · 2026
- Again (Instrumental)
- To My Beloved Thief, Pt. 3 (Original Soundtrack) - Single · 2026
- Again
- To My Beloved Thief, Pt. 3 (Original Soundtrack) - Single · 2026

The Late Regret - Single

The Late Regret - Single

2026
Undercover Miss Hong (Original Soundtrack) Pt. 5 - Single

Undercover Miss Hong (Original Soundtrack) Pt. 5 - Single

2026
A Love Just For You - Single

A Love Just For You - Single

2026
To My Beloved Thief, Pt. 3 (Original Soundtrack) - Single

To My Beloved Thief, Pt. 3 (Original Soundtrack) - Single

2026
Do you know - Single

Do you know - Single

2026
Even If the World Ends: A Single Message - Single

Even If the World Ends: A Single Message - Single

2025
Nextar Project - Single

Nextar Project - Single

2025