Speaking of Nam Ki-Sang... He wrote this too, and it's ****ing great. Everything he did with Girls Day after taking the reigns of the production following their tragic debut Tilt My Head was gold. Some awesome soul-crushing electro-stomper touches with some power-pop rock flourishes makes for a really sugary song that sounds like an aural can of Coke filled with 50 pixie stix.
Girls Day were REALLY the group to beat up until Female President, their singles following Tilt My Head into Expectation were some T-ARA level consistency.