Last Song 2015

CS NUMBERS 2014

Everlasting 2014

My Baby U (애기야) 2010

IRO EP • 2025

Couple - Special Single (커플 (Couple) - Special Single) Single • 2025

SIGnature EP • 2024

2024 SINGLE ALBUM [SEO IN GUK] Single • 2024

이재, 곧 죽습니다 OST Part 2 Single • 2023

Fallen Single • 2022

Seo Single • 2022

Minamdang (Original Television Soundtrack, Pt. 6) Single • 2022

LOVE&LOVE Single • 2022

Doom at Your Service (Original Television Soundtrack), Pt. 7 Single • 2021

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