Adam Andrzej Ostrowski (, 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, AbradAb 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.

Discography

Studio albums

{| class="wikitable plainrowheaders" style="text-align:center;"

|-

! scope="col" rowspan="2" style="width:15em;"| Title

! scope="col" rowspan="2" | Album details

! scope="col" colspan="1" | Peak chart positions

! scope="col" rowspan="2" | Sales

! scope="col" rowspan="2" | Certifications

|-

! scope="col" style="width:3em;font-size:90%;" |POL<br/>

|-

! scope="row" |Saturator

|

  • Released: 2000
  • Label: Self-released
  • Formats: CD

|| —

|

|

|-

! scope="row" |Masz to jak w banku

|

  • Released: 8 October 2001
  • Label: Asfalt Records
  • Formats: CD, digital download

|| —

|

  • POL: 2,000+

|

|-

! scope="row" |30 minut z życia

|

  • Released: 8 April 2002
  • Label: Asfalt Records
  • Formats: CD

|| —

|

|

|-

! scope="row" |Tabasko

|

  • Released: 24 June 2002
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 29

|

  • POL: 4,000+

|

|-

! scope="row" |Jazz w wolnych chwilach

|

  • Released: 8 December 2003
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 21

|

|

|-

! scope="row" |Jazzurekcja

|

  • Released: 22 November 2004
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 5

|

|

|-

! scope="row" |7

|

  • Released: 27 February 2006
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 2

|

|

|-

! scope="row" |HollyŁódź

|

  • Released: 26 February 2007
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 2

|

  • POL: 15,000+

|-

! scope="row" |Ja tu tylko sprzątam

|

  • Released: 25 February 2008
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 1

|

  • POL: 15,000+

|-

! scope="row" |O.c.b.

|

  • Released: 2 March 2009
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 2

|

  • POL: 15,000+

|-

! scope="row" |Jazzurekcja: Addendum

|

  • Released: 30 November 2009
  • Label: Asfalt Records
  • Formats: CD, digital download

|| —

|

|

|-

! scope="row" |Tylko dla dorosłych

|

  • Released: 1 March 2010
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 1

|

  • POL: 30,000+

|

  • POL: Platinum

|-

! scope="row" |Tylko dla dorosłych. Instrumentals

|

  • Released: 8 August 2010
  • Label: Asfalt Records
  • Formats: CD

|| —

|

|

|-

! scope="row" |Jazz, dwa, trzy

|

  • Released: 21 February 2011
  • Label: Asfalt Records
  • Formats: CD, LP, digital download

|| 2

|

  • POL: 30,000+

|-

! scope="row" |Podróż zwana życiem

|

  • Released: 23 February 2015
  • Label: Asfalt Records
  • Formats: CD, LP, digital download

|| 1

|

  • POL: 60,000+

|-

! scope="row" |W drodze po szczęście

|

  • Released: 23 February 2018
  • Label: Asfalt Records
  • Formats: CD, LP, digital download

|| 1

|

  • POL: 30,000+

|-

| colspan="20" style="font-size:90%" | "—" denotes a recording that did not chart or was not released in that territory.

|}

Collaborative albums

{| class="wikitable plainrowheaders" style="text-align:center;"

|-

! scope="col" rowspan="2" style="width:15em;"| Title

! scope="col" rowspan="2" | Album details

! scope="col" colspan="1" | Peak chart positions

! scope="col" rowspan="2" | Sales

! scope="col" rowspan="2" | Certifications

|-

! scope="col" style="width:3em;font-size:90%;" |POL<br/>

  • Label: Asfalt Records
  • Formats: CD

|| —

|

|

|-

! scope="row" |Podostrzyfszy...<br/>(with Warszafski Deszcz)

|

  • Released: 8 October 2009
  • Label: Asfalt Records, Wielkie Joł
  • Formats: LP

|| —

|

|

|-

! scope="row" |Copycats EP<br/>(with Joe Kickass)

|

  • Released: 14 February 2012
  • Label: Asfalt Records
  • Formats: LP

|| —

|

|

|-

! scope="row" |Haos<br/>(with Hades)

|

  • Released: 25 February 2013
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 1

|

  • POL: 30,000+

|-

! scope="row" |Kartagina<br/>(with Marco Polo)

|

  • Released: 4 March 2014
  • Label: Asfalt Records
  • Formats: CD, digital download

|| 1

|

  • POL: 30, 000+

|-

| colspan="20" style="font-size:90%" | "—" denotes a recording that did not chart or was not released in that territory.

|}

Live albums

{| class="wikitable plainrowheaders" style="text-align:center;"

|-

! scope="col" rowspan="2" style="width:15em;"| Title

! scope="col" rowspan="2" | Album details

! scope="col" colspan="1" | Peak chart positions

! scope="col" rowspan="2" | Sales

! scope="col" rowspan="2" | Certifications

|-

! scope="col" style="width:3em;font-size:90%;" |POL<br/>

|

  • POL: Gold

|}

Music videos

{|class="wikitable"

|-

! Year

! Song

! Directed

|-

|| 2001

|"Ile jestem w stanie dać"

|

|-

|| 2002

|"Kochana Polsko"

|Bogumił Godfrejow

|-

|| 2003

|"Rap po godzinach"

|

|-

|rowspan="2"| 2004

|"Odzyskamy Hip-hop"

|Bogumił Godrejow

|-

|rowspan="2"| 2008

|"1980"

|Tomek Czubak

|-

|"Jak nie Ty, to Kto?" featuring Brother J

|Balbina Bruszewska

|-

|| 2009

|"Po drodze do nieba"

|Tomek Czubak

|-

|| 2010

|"Śpij spokojnie"

|Michał Rułka

|-

|| 2011

|"Szpiedzy tacy jak my"

|Bogumił Godrejow<br /> Mikołaj Górecki