At IU's concert in SG, and she said she's going to sing a song that's originally not on her setlist. She sang "A Gloomy Clock" written by Jonghyun. She changed her mic into a aqua blue colour...
— ☃ (@ikonbuns) December 15, 2018
IU: I'm going to sing this song for someone who I really miss 😭😭#IUinSG