Here is the in-game music video (for those of you, who missed it):
But this piece of news isn't about their last song.
It's about their dresses they were wearing in this promotion video:
Those are for sale in-game at a price of 10,000 Korean Won (~7€).
The dresses are supposed to represent each race's female side of things.
And there is no doubt, they do look pretty cute in-game and on the girl-group.
This is just another feature to look forward to until Blade & Soul will finally arrive in Europe.
Some Promotion-Shots:
