O.S.T.R. (aka Adam Ostrowski; born Lodz, Poland, on May 15, 1980) is one of the few rappers in his country to have an educational background in musical studies. A violin player as a youngster, O.S.T.R. went on to a hip-hop career that achieved momentum with his first album, Masz To Jak W Banku, in 2001. Across most of the next decade, O.S.T.R. released nearly ten albums, including Tabasko in 2002, Jazzurekcja in 2004, and the Emade-produced Szum Rodzi Halas in 2005. His popularity was such that O.S.T.R. was featured in various festivals in Poland, including the Heineken Open'e...