Song Chang-sik (Hangul: 송창식; born 2 February 1947) is a South Korean singer-songwriter, who is considered one of the country's most important and influential musicians of the 1960s and 1970s.

[1] He debuted in 1968 as a member of the folk duo Twin Folio,[2] and is credited as being in the vanguard of the early South Korean folk-rock scene.

Song first dreamed of being a singer when he was in 6th grade after having seen a performance of the orchestra at the hall of Incheon Commercial Girls' High School.

After meeting Lee Sang-byeok [ko] at a music room in Seoul called C'est ci bon, he started the band Twin Folio in 1967 with Yoon Hyung-joo [ko], and made his solo debut in 1970.

[4] In 2012, Song was given the Order of Cultural Merit by the South Korean government, who referred to him as the "Godfather of Folk Rock.