question: Which Finnish hip hop group that was active between 1998 and 2005 sang  "Freestyler" 
answer: The Bomfunk MC's
context: Title: Resisposse
  Passage: Resisposse is a Finnish hip hop group, formed in the 2000s in Helsinki.  All members of the group suffer from mental conditions.  Their songs feature themes like coping with severe autism in daily life and extraordinary individuals' relationship to society.  One of the main messages of their lyrics is that nobody should be bullied or discriminated against because of being different.
  Title: Breaking Daylight
  Passage: Breaking Daylight is the second album by Finnish hip hop group Don Johnson Big Band.  It topped the Finnish album charts and has been certified Platinum in Finland.  Both singles released from the album reached top-ten on the singles chart.
  Title: Stig (singer)
  Passage: Pasi Siitonen (born in Finland on 22 August 1978) better known by his stage name Stig or Stig Dogg is a Finnish hip hop, R&B and country music singer.  He has also played in jazz/funk bands like G-Litter, Kuja Orchestra and Raisin Team.  He is a studio engineer under the pseudonym Hullukoira at 3rd Rail Music.  In 2011 he shortened his name from Stig Dogg to just Stig and sang "Laululeija" in a bid to represent Finland in the Eurovision Song Contest 2012, but came third in the finals with Pernilla Karlsson winning with "När jag blundar".
  Title: In Stereo (album)
  Passage: In Stereo is the debut studio album by hip hop group Bomfunk MC's, released in 1999 through Sony Music Finland/Epidrome.  The album reached No. 1 on that year's Finnish albums chart and remained on that chart for 69 weeks. " Freestyler" was released as a single and became a chart-topping hit worldwide during the first half of 2000, reaching No. 1 in eleven countries.
  Title: Bomfunk MC's
  Passage: The Bomfunk MC's were a Finnish hip hop group that was active between 1998 and 2005.  The group's front man was the Finnish rapper B.O. Dubb (born Raymond Ebanks, and formerly known as "B.O.W."), and the main producer was Jaakko "JS16" Salovaara.
  Title: Freestyler (song)
  Passage: "Freestyler" is a single by Finnish hip hop group Bomfunk MC's.  It was released in October 1999 in Finland as the third single from their debut studio album "In Stereo" (2000).  It was released in February 2000 internationally and was a worldwide success, topping the charts in Sweden, Germany, Australia, Norway, New Zealand, Austria, Switzerland, Turkey, Belgium, the Netherlands and Italy.  It also peaked at number two in Denmark and the United Kingdom and number three in Ireland.
  Title: Uptown 3000
  Passage: Uptown 3000 was a Korean American hip hop duo on the record label The Machine Group CEO Alvin & Calvin Waters which consisted of Carlos Galvan aka "Cali-Mexci" and Steve Kim aka "Kwon".  The duo was a spinoff of Uptown, a Korean hip hop group which was active in the late 1990s whose sales reached 6 million.  The duo is considered defunct as the original Uptown made its comeback in Korea in 2006, which Kim and Galvan were a part of.  The group has been credited with being the first Korean hip hop group to closely resemble anything similar to American style hip hop.
citations: Bomfunk MC's Freestyler (song)