Last week legendary old school hip hop trio DJ DOC (Dream of Children) released a teaser for their comeback and now they're back with two more teasers. The teasers seem to parody After School's marching band concept from their Bang promotions. In case you're not familiar with the legendary DOC, DJ DOC consists of Lee Ha Neul, Jung Jae Yong and Kim Chang Ryul and was one of the most popular K-pop groups in the 90's. They gained major popularity throughout the 90s with their hits like Run To You, Dance With DOC, Murphy's Law, One Night and more. Their last album Love & Sex & Happiness was released back in 2004. Their newest album is currently available for digital download across the various Korean music portals so their MV should be out very soon. Thanks to mikel for the tip.