Kim Hyungsoo (김형수; born December 30, 1981 in Gwangju, South Korea), better known by his stage name K.Will (케이윌) is a South Korean ballad singer-songwriter, vocal coach, and DJ at 107.7 SBS Power FM (using his real name as his DJ name). K.Will first became known in South Korea through his single “Dream” in “A Love to Kill” OST, released in 2005. A year after his single, he released his first album “왼쪽 가슴 (Left Heart)” in 2007.