"Crush U", composed by Yoon Sang, is the OST for the online game 'Blade & Soul'. Back on November 18, EXO-CBX held a special stage with "Crush U" at the 'Blade & Soul 2016 Tournament World Championship'. A full MV for the special track will be coming soon this month. 

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Meanwhile, check out the MV teaser for EXO-CBX's "Crush U"!