Previously, allkpop revealed the jacket cover for Seo In Guk's�upcoming new album. Now, we have the MV teaser for his new track, "Shake It Up"! In the teaser, Seo In Kook is lackadaisically sitting back and watching TV when he suddenly gets shocked by what he sees. He starts to crawl back with fear and the teaser abruptly ends with the sound of a slicing knife. The ending is definitely building up anticipation for the release of the official video. Check out the teaser below and stay tuned to allkpop for more updates! Source + Photo: Newsen