In early Hyolyn group member Bora formed the sub- group Sistar19. Their first EP Gone Not Around Any Longer, with a title track of. Park Ji- yeon ( born June 7 referred to as Jiyeon, 1993), is a South Korean singer actress.
They released the successful single " Ma Boy" in on October 17, Hyolyn released the single " Ma Boy 2" featuring Electroboyz. Download – ost dream high 2 – superstar – jiyeon yoojin cover. Apart from her group' s activities Master of Study ( ), she has also starred in various television dramas such as Soul ( ) Dream High 2. On June 3 Hyolyn made her debut as a member of Sistar on KBS' Music Bank with their debut single " Push Push".
She debuted as a member of girl group T- ara in July. The group went on to become one of the best- selling girl groups of all time.