Song Seung Hyun is a South Korean musician and actor. He was a member of the rock band F.T. Island, where he was the guitarist, vocalist, lyricist, and composer. He was the newest member after replacing Oh Won Bin. He was the second-youngest member of the group after Choi Min Hwan. On December 24, 2019, he announced via his Instagram account that he left the group and their label FNC Entertainment to start a new career as an actor.

Apr 7, 2020 he signed with Wooridle Company.