'Secret Love Affair' Yoo Ah In was spotted in the rehearsal scenes for the cable channel JTBC's "Secret Love Affair." In the drama "Secret Love Affair" Yoo Ah In plays Lee Sun Jae, who is a genius pianist. To play this role, Yoo Ah In spends multiples hours a day practicing the piano. He was recently spotted in the rehearsal scenes for the drama, where he practiced acting out a pianist playing the piano, not only practicing where his hands go, but also trying to capture and deliver the expressions as a pianist would do. He practiced being one with the music in the rehearsal scenes. In related news, cable channel JTBC's drama titled "Secret Love Affair" is a story of a forty something woman, Oh Hye Won, who is played by actress Kim Hee Ae, and a naïve genius pianist Lee Sun Jae, played by actor Yoo Ah In.