Kim Gyu Ri reflected on starring in J.Y. Park's "UmUmUm" MV, from back in 2001. She said, "I had such a busy schedule back then filming two dramas and a movie so it was impossible. But I couldn't miss the opportunity to work with the renowned J.Y. Park, so I decided to take the offer."
Kim Gyu Ri continued, "The person who taught me how to dance happened to be Rain. Before his grand debut, Mr. Ji Hoon was my dancing partner."