The Farewell Girls [哀乐女子天团]

Four singing girls accidentally come to sing, but they realize it's a funeral. As girls then begin to see the weight of life and death, which means goodbye, and they began to sing a melody of mourning, then they discover that death is not necessarily associated with something sad, hence from that arises a Idea of creating a band to sing at funerals, sing musics that the dead liked.