PD Shin Jung Soo of MBC's 'I Am a Singer' has sent a love call to SISTAR's Hyorin! During an interview, the PD revealed, "She's a friend that I would love to have on the show out of all of the other idol singers.�She has surprising vocal talent and performance skills, as well as an exceptional ability in understanding songs. She's a treasure that show producers can only hope to have." SISTAR's Hyorin has been on the rise every week with her performances on KBS's 'Immortal Song 2', creating a 'Hyorin-syndrome' amongst netizens who became captivated by her vocal talent. Now that the highest official of 'I Am a Singer' has praised her, attention is being put on whether Hyorin will make the advancement and move on from 'Immortal Song 2' to 'I Am a Singer'. Source + Photos: Joy News 24 via Naver