SISTAR's new sub-unit group, SISTAR19, made their round of debuts on this week's music promotions with their title track, "Ma Boy."�In an interview with Sports Today and Star News, the girls took the time to explain a bit about their image and what differentiates them from SISTAR. - The girls began, "'Ma Boy' is a song about the emotions that a 19 year old girl feels as she matures into a 20 year old.�It's because of this song that our team name includes the number 19.�There definitely was pressure in having to do better as a representation of SISTAR, but our dongsengs supported us a lot through the ordeal and helped lessen some of the weight." They continued, "Now that we're promoting, we feel the empty spaces of our two dongsengs.�It's still kind of awkward working with back dancers on stage." - When asked what differentiated them from SISTAR, Bora replied, "SISTAR19's image lies in maturity.�There's a difference between our music and SISTAR's music. As SISTAR, we were always known for our powerful and strong image.�This time, we're promoting a medium tempo track with a smooth melody that truly makes us feel like feminine women.�It's sexy, but also cute." Bora continued, "Through SISTAR19, we feel like we're able to show a stronger color of who the two of us are.�We hope to get SISTAR's name more known through this promotion cycle." Source + Photo: Sports Today via Naver, Star News via Naver