O.S.T.R.
O.S.T.R. in 2011
Born	Adam Andrzej Ostrowski (1980-05-15) 15 May 1980 (age 44)[1] Łódź, Poland
Nationality	Polish
Alma mater	Academy of Music in Łódź
Occupations	Rapper musician record producer audio engineer
Spouse	Natalia Ostrowska
Children	2
Parent(s)	Barbara Ostrowska Marek Ostrowski
Musical career
Also known as	O.S.T.R. Ostry Oster
Genres	Hip hop jazz rap political hip hop alternative hip hop
Instruments	Vocals violin keyboards sampler
Years active	1997–present
Labels	Asfalt Records
Musical artist

Adam Andrzej Ostrowski (Polish pronunciation: [ˈadam ɔsˈtrɔfskʲi], born 15 May 1980 in Łódź, Poland), better known as O.S.T.R., is a Polish rapper, musician, audio engineer and record producer, famous for his freestyle rap skills, ambitious lyrics and unique beats. He graduated from the Academy of Music in Łódź, violin class. He is one of the few Polish rappers who have received professional musical education. He has collaborated with American rappers such as Evidence, El Da Sensei, Craig G, Keith Murray, Jeru The Damaja, Lil' Dap, Sadat X and Canadian producer Marco Polo. He has also collaborated with many Polish artists, including jazz musicians Michał Urbaniak, Hades, SOFA, Fokus, DJ Deszczu Strugi, DonGURALesko, Vienio i Pelson, Fu, Pezet, Sistars and Slums Attack. He is a member of bands such as Tabasko, Skill Mega, Killing Skills, Beat Brothers and musical project POE. He is also a former member of Obóz TA and LWC. In 2013, he shared the position of art director of Męskie Granie festival with alternative rock vocalist Kasia Nosowska.

• Z odzysku (2006, as himself)
• Ziomek (2006, voice)

• Official web site