Gain - Carrie (The First Day)
Gain - Carnival (The Last Day)
Gain - 반딧불이의 숲 (The Forest of Fireflies)
Gain - 비밀 (Secret)
Gain - Must Have Love (Feat. Eric Nam)
Gain - 열두 시가 되면 (When The Twelve O'Clock)
Gain - 두 여자 (Two Women)
Gain - Apple (Feat. Jay Park)
Gain - Free Will (Feat. Dok2)
Gain - Paradise Lost