Brown Eyed Girls release first teaser for 'The Original'

Yesterday, BEG released the first teaser for their comeback single/album 'The Original'. But, there was no sign of any of the members, only a girl dancing around while wearing headphones (Monster® Diamond Tears to be exact). Is this a new member? A new girl with the company? A collaboration? A dancer? We'll have to wait until July 17th (KST) to find out!