Seo Eun Kwang (BTOB) - Invincible (OST Elsword)
Seo Eun Kwang (BTOB) - 1분에 한 번 (Once In A Minute) (OST Moonshine Part.7)
Seo Eun Kwang (BTOB) - 너를 떠나 (Leaving you) (OST Tomb Raider King Part.1)
Seo Eun Kwang (BTOB) - 왜, 너만 (Why'd you leave me) (OST Replay Part.5)
Seo Eun Kwang (BTOB) - I'll Be There (OST Love Is Annoying, But I Hate Being Lonely Part.3)
Seo Eun Kwang (BTOB) - 서랍 (Dear My Dear)
Seo Eun Kwang (BTOB) - 아무도 모른다 (No One Knows)
Seo Eun Kwang (BTOB) - Have a nice day
Seo Eun Kwang (BTOB) - 세상에 영원한 게 없다 해도(WALK)
Seo Eun Kwang (BTOB) - 사계 (The Four Seasons)