North Korean musicians are suspected of having plagiarized a 2017 song by South Korean girl group GFRIEND, according to a North Korea expert here. Kang Dong-wan, a political science professor at Dong-A University, posted a video on his YouTube channel, Jan. 9, showing North Korean singer Jeong Hong-ran singing an arranged version of “Envy Us” (direct translation) during a New Year's Eve celebration event.