Contestants Jung Seung Hwan and Park Yoon Ha's duet song "I Have To Forget You" that made Park Jin Young cry on "K-Pop Star 4" rose to rank 1 on 7 different music charts.

The song "I Have To Forget You" that the two sang ranked 1st place on January 19 on MelOn, Genie, Olleh Music, Soribada, Bugs Music, Naver Music, and Daum Music.

The song was aired on January 18 through SBS audition program "K-Pop Star" season 4 and they are rapidly rising to popularity with their amazing voices and singing skills.

The song is originally by Lee Hyun Woo and Park Jin Young said, "It's like a real-life situation. It looks like you two are really breaking up. I don't know what to even judge. It was the best," tearing up a little.