Yong JunHyung [용준형] (B2ST) & BTOB [비투비] - First Love [첫사랑] (MonStar OST)
Yong Junhyung, BTOB - First Love (첫사랑)
Yong JunHyung [용준형] (B2ST) & BTOB [비투비] - First Love [첫사랑] (MonStar OST)
Yong JunHyung (용준형 of BEAST) (B2ST) & BTOB (비투비) - 시간이 흐른 뒤엔 (After Hours) (Inst.) (MonStar OST Part 2)