SidoPaul Würdig (born 30 November 1980), better known as Sido, is a German rapper. He interprets his artist name as "super-intelligentes Drogenopfer" (super-intelligent drug victim). It used to stand for "Scheiße in dein Ohr" (shit in your ear), a line from his track Terroarr. Sido is currently signed to Urban/Universal Music Group.

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