HyunA revealed her brief acting experience before she officially debuted as an idol on the August 5 airing of 'Sketchbook.' 

The idol told MC Yoo Hee Yeol, "I have a bit of acting experience before I debuted as a singer. I was a model in an ad for a telecommunications company and appeared in movie 'I Wish I Had a Wife.' I also appeared on a sitcom called 'Soonpoong Clinic.'" 

SEE ALSO: HyunA's choice of top & comment about public relationships become a hot topic

HyunA then confessed that her roles were too insignificant and small to be even noticed, joking, "I was just Midal's friend. I didn't even have any lines and just played in the sand." (Note: Midal was the daughter of the main character on 'Soonpoong Clinic').

Check out her performances on the show below.