The beastly beginning, pyramid position and zombie-like dance moves have made 2PM's Heartbeat a big hit with everyone ever since it's release last year. Just recently, two members from F.T. Island, Jaejin and Seunghyun did a dance cover of Heartbeat while they were on a break from their filming for their Baviphat CF photo shoot. Check out their goofiness in the video below. http://www.youtube.com/watch?v=c-62t_32NO8