Battle of the Bands: The Ultimate Test

Everyone knows of the traditional Battle of the Bands but this time we're changing the rules. International bands both famous and not so famous are meeting in one place for one week to compete for local and worldwide popularity. They'll make lasting friendships and lasting rivalries, who knows maybe there'll even be a bit of romance here. It'll at least be an interesting and hectic mess as some of the best in music are here to show what they got. So let's talk about the bands:
KPOP/KRock: NU'EST, SHINee, INFINTE, Girl's Generation, B2Y, Co-ed School, Teen Top, EXO, BTS, BAP, 2NE1, BEAST, U-Kiss, 17, BigBang, BOYFRIEND, History, Got7, Red Velvet, SISTAR, Block-B, and APink for now.
CPOP/CRock: EXO for now
JPOP/JRock:AKB48, Arashi,C-ute, E-girls, AAA, Dream, SKE48, Halcali, Ali Project, Hey!Say! JUMP, Alice Nine, Antic Cafe, the GazettE, Kagrra(even though what happened :'(), Nightmare, Sug, BeForU, KRA, Ayabie, Sadie, Da-iCE, GENERATIONS, and Momoria Clover Z.
Other Bands as of now: Panda Age(original band), GKGBxBKGG(Good Kids Gone Bad x Bad Kids Gone Good; original band) 5sos, MKTO, Little Mix, and Fifth Harmony as of now.
So lots of bands, lots of people, lots of talent, we're in for a good show!