Hallyu star Rain and f(x) member Krystal showed off on Sunday a perfect collaboration stage on a popular Korean variety show.
On SBS' "Running Man," Rain and Krystal paired up to stage a performance of Michael Jackson's song "Billie Jean."
Despite the short preparation time of an hour, both received a round of applause for the high-quality performance.
The collaboration stage was part of the competition to win the programme's game. Singer Alex, entertainer Haha and actor Park Young-gyu were the judges for the duet performance contest.
"I can't believe Rain and Krystal prepared this performance in an hour," Haha said, expressing his astonishment.