This video isn't subbed, and I don't speak Korean unfortunately, but here are some highlights anyway.
- John has a terrible new haircut.
- He also has a girlfriend. (Why God, why!)
- The judges are Seo In-Young, Lena Park, Tiger JK, and Tasha
- He sings two songs. One in English (If I Ain't Got You) and then he's asked to do another in Korean (2 Different Tears).
source (YT user LenaParkLena)