I just thought this was hilarious:

I mean, the song and singing is nice, but the audience just completely distracts from that! XD I always love watching lives to see how the audience reacts! It's so funny that once the young guy (from KAT-TUN) starts singing, the girls starting cheering and screaming...

I just wonder if they knew he was on stage before he started sing...O.o

Hehe...He would be on stage and they would be like ,"Hey, there's KAT-TUN...just standing there...wonde what they're gonna do..." and then he/they start singing and they'd be like ,"HOLY CRAP! IT'S KAT-TUN!! I HAD NO CLUE!!" Pfft...that so silly! XD