Sido

Paul Hartmut Würdig, better known as Sido, is a German rapper. He interprets his stage name as "super-intelligentes Drogenopfer". It originally stood for "Scheiße in dein Ohr", a line from his track "Terroarr".
Sido is known for his provocative and aggressive lyrics. After gaining prominence with his debut album Maske in 2004, he became recognisable for wearing a silver skull mask. However, he stopped wearing the mask in 2005.
Würdig's career began in 1997 as one half of the duo Royal TS with B-Tight. Both were initially signed to the Berlin hip hop label Royal Bunker before joining Aggro Berlin in 2001. As of 2009, Sido has been signed to Urban/Universal Music Group.