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1. FC Köln was the German club where Song played. The Cameroonian defender joined Köln in 2000 and spent four seasons with the club, making over 100 appearances. During his time there, he helped Köln win the DFB-Pokal in 2003 and reach the UEFA Cup semi-finals in 2002. Song's impressive performances in the Bundesliga earned him a move to Liverpool in 2004.