One of the best K-pop concerts in Seoul one should attend is the Lotte Duty Free Family Concert. This year, the concert continues to be held over two nights. Indisputably, it has one of the best artist lineups in town. On the first night, Lotte has invited Blackpink, B1A4, BtoB, Sunmi, Kim Bum Soo and … More Lotte Duty Free Family Concert 2018– Part I