J.Y. Park revealed his father is a late-stage dementia patient while delivering the comment for JOA Choir after their performance. 

On the November 6th episode of SBS's 'Sing For Gold', J.Y. Park opened up about his father's ailment while giving feedback for JOA Choir. On this day he commented, "I really don't like saying things unrelated to the performance as a judge. But I couldn't stop thinking about my father. My father is currently a late-stage dementia patient. He doesn't recognize me. I sometimes even think it's fortunate that I can't visit my father due to Covid-19 because it hurts me so much to see him not know who I am whenever I visit him. It's really hard for me to endure it."

He continued, "I know I have to give feedback on your performance but I couldn't stop thinking about him. Your performance grabbed my heart. You did it last time and you did it again this time. I believe this song wouldn't have hit close to home if we were living in a perfect world. But everyone is hurt these days. Especially when you're over 40, there are many more sad moments than happy moments. I think you were able to deliver the lyrics so well because you're mostly not in your 20s or 30s." 

He ended his feedback with, "Again, I really don't like giving feedback with factors other than technicalities of performance but your performance had me hooked. I don't even know what detailed feedback I should be giving."