On the 8th, female hip hop duo Miss S released the music video teaser for their new single, 'What Have You Done While Growing This Old (? ?? ?? ????)'. Having revealed their new album jacket pictures on the 6th, this new teaser reveals the featured artist for the song, ballad diva Jung Seul Gi, and it is predicted that she will accompany Miss S during their promotions. The song 'What Have You Done While Growing This Old' was produced by Rhymer and Master Key, who have also produced past hit tracks such as T-ara's 'TTL Listen 2', Outsider's 'Acquaintance', and ChoPD's 'It's An Act'. Miss S' comeback single after a year, called 'Miss Independent', will be released this coming 10th. Check out the MV teaser below. http://www.youtube.com/watch?v=UyNa8quy2dQ