At international level, he represented the South Korea national football team at the 2002 and 2006 FIFA World Cup.

[4] He also nullified Luís Figo perfectly by blocking all twelve of his dribbles without a concession, making a memorable match against Portugal.

He made 56 appearances including UEFA Champions League games for Feyenoord in two seasons under Bert van Marwijk.

However, his form regressed due to his ankle injuries, and he completely lost his place in the squad after Van Marwijk was replaced by Ruud Gullit.

[8] Song returned to South Korea to play for Suwon Samsung Bluewings after leaving Feyenoord in January 2005.

[9] He was selected for the national team for the 2006 FIFA World Cup despite concern about his condition, and played the first group match against Togo.