Who was a member of the group Sistar, Alex Kapranos or Hyolyn?
Alex Kapranos:  He is best known as the lead singer and guitarist of Scottish rock band Franz Ferdinand. Hyolyn: Kim Hyo-jung (born January 11, 1991), better known by her stage name Hyolyn, is a South Korean singer-songwriter. Hyolyn:  She is best known as a former member of South Korean girl group Sistar and their sub-unit Sistar19.
Hyolyn