DPRK leader Kim Jong Un and his wife Ri Sol Ju have watched South Korean K-pop singers perform in Pyongyang for the first time in more than a decade, as tensions between the two countries thaw. Sunday's two-hour concert comes as South Korea's engagement with the DPRK has continued to grow, since Kim Jong Un expressed his willingness for more contact between the two countries. The same South Korean singers will hold a joint concert with DPRK performers on Tuesday at the Ryukyung Chung Ju Yung Gymnasium. The gymnasium is a joint project between the DPRK and ROK, and it's named after Hyundai Group billionaire founder, Chung Ju-yung. Chung had long advocated inter-Korean cultural and economic exchange.