SG Wannabe will officially start activities with their new member in late May. Lee Seok-hun was chosen from 500 hopefuls to become the new member of SG Wannabe, replacing Chae Dong-ha who chose to pursue a solo career after finishing recording SG Wannabe's 5th album. Lee Seok-hun has experience in the underground scene and was featured on the soundtrack for the drama My Lovely Samsoon.