Gugudan (구구단)- I Belive In This Moment [School 2017 OST Part.1 ] 산적이얌 0 100 2017.07.18 23:49 https://youtu.be/PqyWG4pC6BQ + 21 Gugudan - I believe in this moment [School 2017 OST Part.1] 학교 2017 ost Genre : ost Release date : 2017 07 17 Language : Korean.