Kim Yoo-jung, known simply as Yoojung, is a South Korean singer, dancer, former member of AB AVENUE and member of LABOUM. She graduated from Dongguk University College of Education Affiliated Girls' High School and later obtained a bachelor's degree in Practical Music from Myongji University. She made her debut in 2010 as pat of the project group AB AVENUE, a duo that had rotating members, with the single "Only You". She left less than a year later and in 2013, appeared as an impersonator of sin...