| Album | 머니게임 OST Part 2 초콜릿 OST Part.4 왓쳐 OST Part 1 SKY 캐슬 OST Part 4 |
| Song | Artist | Album | Lyrics |
|---|---|---|---|
| Higher | 하진 (HAJIN) | 머니게임 OST Part 2 | Lyrics |
| Always be here | 하진 (HAJIN) | 초콜릿 OST | |
| Horizon | 하진 (HAJIN) | 왓쳐 OST Part 1 | Lyrics |
| We all lie | 하진 (HAJIN) | SKY 캐슬 OST Part 4 | Lyrics |