I've seen a lot of those bootleg K-Pop albums on iTunes. There was a bootleg of T-Ara's Temptastic which included random Hyuna songs. Here's some Wonder Girls ones
"As reconfirmed by officials, both EXO and SHINee are in the midst preparations for their debut and come back stages respectively. EXO is set to debut around the first cycle of SHINee’s come back promotions. Both groups are practicing hard in order to present sensational stages. "
cr : itema
The only thing separating this from being a B2ST song is the key of the chorus. Everything else is copy + paste. They were probably back dancers for B2ST, too.
Here's some Wonder Girls ones
