EXO is a South Korean/Chinese boy band formed in 2011 produced by SM Entertainment. Their debut single 'MAMA' was released in April, 2012. It consists of two sub-groups, EXO K, who promote their music in South Korea and EXO M who promote in China. Each sub-group has six members each.
A - "Did you watch all those teasers of the new boy band SM Entertainment's releasing?"
B - "YES! They're called EXO! They're totally gonna be the hottest kpop