Super talented The One appeared on KBS 2TV's quiz program, '1 vs. 100,' on February 16, where announcer Cho Woo Jong asked him, "As a vocal trainer, which protegee was the most memorable?"

He replied, "Girls' Generation's Taeyeon.  When I was meeting Taeyeon to teach her, she was a young child, but she had a gaze filled with the certainty of which path she has to take, how she should practice, how far she'll go, and more."

He also revealed he had taught Bae Yong Joon's wife Park Soo Jin when she was in the girl group Sugar.