Actor Park Seo Joon turned into a sweet OST singer.

On KBS 2TV "Music Bank" aired on December 19, Park Seo Joon performed the song "You're In My Heart."

For the end-of-the-year special of the show, Park Seo Joon performed tvN Drama "Witch's Romance" OST "You're In My Heart." Park Seo Joon had sung the song for his own drama.

When he appeared on stage, Park Seo Joon seemed nervous and his voice shaky but he fluttered many hearts of the audience with his sweet singing voice.