Singer and actor Seo in Guk's audition from the past has been revealed. 

Recently on an online community, a video titled "Seo In Guk's JYP Audition" was uploaded. 

The video was when Seo In Guk auditioned for JYP Entertainment in 2007. He sang Wheesung's song, "A Story I Can't Tell." 

He was seen wearing a T-shirt, baseball cap, thick glasses. Although he seemed to appear casual, he showed off his jawline and broad shoulders. 

He once admitted on air that he threw up to lose weight, during the time he auditioned for JYP's audition. 

Seo In Gook is currently acting as the role of the player Yoo Seung Gi on MBC's weekend drama "Rascal Sons."