Kei

- Love Is
- Oh My Venus, Pt. 6 (Original Television Soundtrack) - Single · 2015
- Ride or Die
- Ride Or Die (Run On [Original Television Soundtrack], Pt. 2) - Single · 2020
- BAD BLOOD
- QUEENDOM PUZZLE ALL-ROUNDER BATTLE 2 - EP · 2023
- Bye
- A Time Called You (Music from The Netflix Series) · 2023
- PUZZLIN′
- QUEENDOM PUZZLE SEMI FINAL - Single · 2023
- Y (feat. BUMZU)
- Y (feat. BUMZU) - Single · 2016
- Love Song
- Tale of the Nine Tailed 1938, Pt. 2 (Original Television Soundtrack) - Single · 2023
- Wind Song
- Tale of the Nine Tailed 1938, Pt. 4 (Original Television Soundtrack) - Single · 2023
- Smile
- Smile - Single · 2025
- A Song For You
- CookieRun: Tower of Adventures (Original Soundtrack) A Song For You - Single · 2025

Smile - Single

Smile - Single

2025
Winter Garden - Single

Winter Garden - Single

2024
No Gain No Love, Pt. 6 (Original Soundtrack) - Single

No Gain No Love, Pt. 6 (Original Soundtrack) - Single

2024
Dreaming of a Freaking Fairy Tale, Pt. 1 (Original Soundtrack) - Single

Dreaming of a Freaking Fairy Tale, Pt. 1 (Original Soundtrack) - Single

2024
Into My Playlist Pt. 4 - EP

Into My Playlist Pt. 4 - EP

2023
Summer, Love Machine Blues (O'PENing) [Original Soundtrack] - Single

Summer, Love Machine Blues (O'PENing) [Original Soundtrack] - Single

2023
Tale of the Nine Tailed 1938, Pt. 4 (Original Television Soundtrack) - Single

Tale of the Nine Tailed 1938, Pt. 4 (Original Television Soundtrack) - Single

2023

I Wish! (feat. Duy An, Alex Harper & Kei) - Single

I Wish! (feat. Duy An, Alex Harper & Kei) - Single

Dynasaur
Static (feat. JAEMAN & Kei) - Single

Static (feat. JAEMAN & Kei) - Single

Clazziquai
Can't Live without U (feat. Kei) - Single

Can't Live without U (feat. Kei) - Single

Hyungdon & Daejun