On February 25 episode of KBS' music show 'You Hee-yeol's Sketchbook', Yoon Chan Young made a guest appearance.
During the talk, Yoon Chan Young shared that he was actually a K-pop trainee, which made everyone surprised.
When asked if he could explain this a bit, Yoon Chan Young said, "After I had already made my acting debut, I received a call from one agency."
The actor continued, "They said it would be helpful for me to take vocal and dance classes. They were like, 'It would come in handy one day.' So, I started training. I trained almost as hard as other K-pop trainees."

He added, "He took me out for a meal; he bought me hot pot bulgogi at that time. It's been almost 10 years since then, but the memory of that day is still vivid in my head."
Then, the host You Hee-yeol asked, "How old was he then? And how old were you?"
With a smile, Yoon Chan Young answered, "He was 15, and I was 13. We were both young."

Yoon Chan Young shyly smiled, then showed his flawless rap to 'Boong Boong' (literal title) by hip-hop artist HAON.

(SBS Star)