A.KOR has dropped their digital single 'But Go' as a full five-member group, along with a dark MV that is sure to get eyebrows raising by the bold concept.

The girls torture men who are gagged and tied up in cages, showing the members getting "payback" by dunking their heads into bath tubs while asking, "Why did you cheat on me when you said you loved me?"

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The some was composed and written by Lim Sang Hyuk, Untouchable's Sleepy, and Big Sancho while talented rapper Woo-Side took part in the chorus.�

The girls will be hitting SBS's 'Inkigayo' on September 7 and KBS's 'Music Bank' on September 12 for their first music show appearances.