On February 11, Seohyun unexpectedly appeared at the North Korean art troupe Samjiyon Orchestra's concert at the National Theater of Korea, Seoul, held in celebration of '2018 PyeongChang Winter Olympics'.
Seohyun came up to the stage and sang songs with the female octet, smiling throughout the performance.
She was even seen warm-heartedly holding hands and hugging the performers.
The singer ended the finale and received a standing ovation from the audience.
(Lee Narin, Credit= Yonhap News Agency)
(SBS Star)