Singer Lee Jung has been formally discharged from his service in the Global Marine Corps, and now he's looking to make his comeback in his career. On October 26th, Lee Jung launched his latest digital single, "Work of Breaking Up" ("???? ?")�through various music sites. What's interesting to note is that�Gil and Gary of hiphop duo Leessang have lent their talents for the smooth urban track. As Lee Jung has been absent from the music industry for awhile now, it is only natural that he would be eager and excited about his comeback. In fact, right before his digital single was released, he tweeted, "In about 5 minutes, 'Work of Breaking Up' feat. Leessang will be released to the world... Please spread the love. It will do well...^^" "Work of Breaking Up" was based off of Lee Jung's military experience, as the artist penned the lyrics himself. Check out the track below! [gallery link="file"] Source + Photos: Nate News