Yook Sung Jae (BTOB) - 또 사랑하고 만다 (Love You Again)
Yook Sung Jae of BTOB feat. Park Hye Soo - Love Song [Who Are You: School 2015 OST]
Yook Sung Jae - I Will Love Again
Yook Sung Jae of BTOB (비투비) - Loving you again (Ost 3 SWWTH)
Yook Sung Jae (BTOB) - Love You Again (OST Scholar Who Walks the Night)
Yook Sung Jae - Your Name [ OST: Who Are You: School 2015]
Scholar Who Walks the Night OST - Yook Sung Jae (BTOB) - Love You Again
Yook Sung Jae (육성재 of BTOB) - 또 사랑하고 만다 (Love You Again) (Scholar Who Walks The Night OST Part 3)
Louie(루이) (Geeks) - On the Four Lane Road(사차선도로) (Feat. Yook Sung Jae(육성재) of BTOB(비투비))
Bbyu (쀼) (Yook Sung Jae (육성재 of BTOB) & Joy (조이 of Red Velvet)) - 어린애(愛) (Young Love)
Yook Sung Jae (육성재 of BTOB) & Park Hye Soo (박혜수) - Love Song (Who Are You – School 2015 OST Part 8)
Yook Sung Jae (BTOB (비투비)) [OST Scholar Who Walks The Night] - Love You Again (또 사랑하고 만다)
Bbyu (쀼) (Yook Sung Jae (육성재 of BTOB) & Joy (조이 of Red Velvet)) - 어린애(愛) (Young Love) (Inst.)