Tears In My Heart (30 But 17 OST)- Lucia

용주 (YONGZOO), 예지 (Yezi) - 눈을 맞추면 (Drama Ver.) [Are You Human Too? - 너도 인간이니? OST Part 7]

Come Back Home

효린 (Hyolyn) Just Stay (Thirty But Seventeen OST Part 2)

Sometimes - U Sung Eun (The K2 ost part. 2)

DMEANOR (디미너) - Why Do We [Are You Human Too? - 너도 인간이니? OST Part 8]

G.O (MBLAQ) – Like Tomorrow Won't Come (Doctor Stranger OST Part. 4)

You Belong To My World

2BIC (투빅) - Heart [Are You Human Too? - 너도 인간이니? OST Part 4]

Ost. Scarlet Heart Ryeo (달의 연인-보보경심 려) - My Love (내 사랑) - Lee Hi (이하이) Cover

Ben (벤) - Memory [Introverted Boss - 내성적인 보스 OST Part 2]