I'm guessing that this concert they were singing at is similar to KBS Open Concert. I usually don't prefer Yoochun with long hair but he looks adorable here. In fact, it made me giggle so much! This performance was perfect and it made my heart pound until the very end of the performance. God, I miss them so much! (Credits: Soompi&no1akiyamaYT)
P.S If you have a subbed video of this performance, feel free to upload