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Hong Soo Hyun previously showed off her adorable, tone-deaf singing while playing with the karaoke machine at the 'roommate' sharehouse and the 'Roommate' OST director himself, Yoon Jong Shin, decided to help her to become a better singer.

Hong Soo Hyun arrived at the studio with patbingsu (Korean shaved ice) for Yoon Jong Shin who is the singer behind the hit song "Patbingsu". Upon meeting the actress, Yoon Jong Shin complimented her, "You're the prettiest among the '81 liners that I know." Eddy Kim, Muzie, and Kim Ye Rim (Lim Kim) also pitched in to give her singing lessons.

Hong Soo Hyun tested out her vocals by singing the first verse of Kim Ye Rim's "All Right" to which Yoon Jong Shin bluntly commented, "You have the voice of my grandmother who passed away 22 years ago", bringing laughs.

Seo Kang Jun also made a surprise visit to the studio to support Hong Soo Hyun and treated them with things to drink.

Also catch EXO's Baekhyun's visit on 'Roommate' this Sunday at 4:20 PM KST!