Kim Sung-kyu, referred to as Sunggyu or Sungkyu, is a South Korean singer and actor. He is the leader and vocalist of South Korean boy band Infinite. In November 2012, Kim began his solo career with his first extended play, Another Me, which debuted at number one on the Gaon Album Chart. His second extended play, 27, debuted at number one on the Gaon Album Chart and number eight on the US Billboard World Albums chart, and yielded two South Korean top-ten singles "The Answer" and "Kontrol".