GHOST9 covered 2PM's "Heartbeat" on 'Immortal Song'.

On the October 29th 'Legends of K-pop' special, GHOST9 were the first performers up with their cover of 2PM's 2009 track "Heartbeat". The boy group put a fresh twist on the hit song, but they lost the round to Flower. In the end, it was Parc Jae Jung who took the final win this episode.

Watch GHOST9's cover above and 2PM's original "Heartbeat" below!