I love SISTAR19 too, I love Ma Boy and Gone Not Around Any Longer, both very addicting songs, though I wish Bora can have more lines but I know she is the rapper. And also Loving U and Alone, there acually no SISTAR's songs that I dislike, nice job SISTAR. Thats why I'm very excited for their comeback and after the teaser, I think I will like this song too (:
Their company is very good at producing music for them that suits their style, I really don't mind if they keep on doing this kind of music though, since I loved it, and what if they wanted to change their music style, but end up people not liking their songs anymore because they're not suitable for it? You never know.